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Patterson approved the acquisition of the site on 25 November 1942, authorizing $440,000 for the purchase of the site of 54,000 acres (22,000 ha), all but 8,900 acres (3,600 ha) of which were already owned by the Federal Government.[95] Secretary of Agriculture Claude R. Wickard granted use of some 45,100 acres (18,300 ha) of United States Forest Service land to the War Department "for so long as the military necessity continues".[96] The need for land, for a new road, and later for a right of way for a 25-mile (40 km) power line, eventually brought wartime land purchases to 45,737 acres (18,509.1 ha), but only $414,971 was spent.[95] Construction was contracted to the M. M. Sundt Company of Tucson, Arizona, with Willard C. Kruger and Associates of Santa Fe, New Mexico, as architect and engineer. Work commenced in December 1942. Groves initially allocated $300,000 for construction, three times Oppenheimer's estimate, with a planned completion date of 15 March 1943. It soon became clear that the scope of Project Y was greater than expected, and by the time Sundt finished on 30 November 1943, over $7 million had been spent.[97]
Map of Los Alamos site, New Mexico, 1943–45
Because it was secret, Los Alamos was referred to as "Site Y" or "the Hill".[98] Birth certificates of babies born in Los Alamos during the war listed their place of birth as PO Box 1663 in Santa Fe.[99] Initially Los Alamos was to have been a military laboratory with Oppenheimer and other researchers commissioned into the Army. Oppenheimer went so far as to order himself a lieutenant colonel's uniform, but two key physicists, Robert Bacher and Isidor Rabi, balked at the idea. Conant, Groves and Oppenheimer then devised a compromise whereby the laboratory was operated by the University of California under contract to the War Department.[100]
Chicago
Main article: Metallurgical Laboratory
An Army-OSRD council on 25 June 1942 decided to build a pilot plant for plutonium production in Red Gate Woods southwest of Chicago. In July, Nichols arranged for a lease of 1,025 acres (415 ha) from the Cook County Forest Preserve District, and Captain James F. Grafton was appointed Chicago area engineer. It soon became apparent that the scale of operations was too great for the area, and it was decided to build the plant at Oak Ridge, and keep a research and testing facility in Chicago.[101][102]
Delays in establishing the plant in Red Gate Woods led Compton to authorize the Metallurgical Laboratory to construct the first nuclear reactor beneath the bleachers of Stagg Field at the University of Chicago. The reactor required an enormous amount of graphite blocks and uranium pellets. At the time, there was a limited source of pure uranium. Frank Spedding of Iowa State University were able to produce only two short tons of pure uranium. Additional three short tons of uranium metal was supplied by Westinghouse Lamp Plant which was produced in a rush with makeshift process. A large square balloon was constructed by Goodyear Tire to encase the reactor.[103][104] On 2 December 1942, a team led by Enrico Fermi initiated the first artificial[note 3] self-sustaining nuclear chain reaction in an experimental reactor known as Chicago Pile-1.[106] The point at which a reaction becomes self-sustaining became known as "going critical". Compton reported the success to Conant in Washington, D.C., by a coded phone call, saying, "The Italian navigator [Fermi] has just landed in the new world."[107][note 4]
In January 1943, Grafton's successor, Major Arthur V. Peterson, ordered Chicago Pile-1 dismantled and reassembled at Red Gate Woods, as he regarded the operation of a reactor as too hazardous for a densely populated area.[108] At the Argonne site, Chicago Pile-3, the first heavy water reactor, went critical on 15 May 1944.[109][110] After the war, the operations that remained at Red Gate moved to the new site of the Argonne National Laboratory about 6 miles (9.7 km) away.[102]
Hanford
Main article: Hanford Site
By December 1942 there were concerns that even Oak Ridge was too close to a major population center (Knoxville) in the unlikely event of a major nuclear accident. Groves recruited DuPont in November 1942 to be the prime contractor for the construction of the plutonium production complex. DuPont was offered a standard cost plus fixed-fee contract, but the President of the company, Walter S. Carpenter, Jr., wanted no profit of any kind, and asked for the proposed contract to be amended to explicitly exclude the company from acquiring any patent rights. This was accepted, but for legal reasons a nominal fee of one dollar was agreed upon. After the war, DuPont asked to be released from the contract early, and had to return 33 cents.[111]
A large crowd of sullen looking workmen at a counter where two women are writing. Some of the workmen are wearing identify photographs of themselves on their hats.
Hanford workers collect their paychecks at the Western Union office.
DuPont recommended that the site be located far from the existing uranium production facility at Oak Ridge.[112] In December 1942, Groves dispatched Colonel Franklin Matthias and DuPont engineers to scout potential sites. Matthias reported that Hanford Site near Richland, Washington, was "ideal in virtually all respects". It was isolated and near the Columbia River, which could supply sufficient water to cool the reactors that would produce the plutonium. Groves visited the site in January and established the Hanford Engineer Works (HEW), codenamed "Site W".[113]
Under Secretary Patterson gave his approval on 9 February, allocating $5 million for the acquisition of 40,000 acres (16,000 ha) of land in the area. The federal government relocated some 1,500 residents of White Bluffs and Hanford, and nearby settlements, as well as the Wanapum and other tribes using the area. A dispute arose with farmers over compensation for crops, which had already been planted before the land was acquired. Where schedules allowed, the Army allowed the crops to be harvested, but this was not always possible.[113] The land acquisition process dragged on and was not completed before the end of the Manhattan Project in December 1946.[114]
The dispute did not delay work. Although progress on the reactor design at Metallurgical Laboratory and DuPont was not sufficiently advanced to accurately predict the scope of the project, a start was made in April 1943 on facilities for an estimated 25,000 workers, half of whom were expected to live on-site. By July 1944, some 1,200 buildings had been erected and nearly 51,000 people were living in the construction camp. As area engineer, Matthias exercised overall control of the site.[115] At its peak, the construction camp was the third most populous town in Washington state.[116] Hanford operated a fleet of over 900 buses, more than the city of Chicago.[117] Like Los Alamos and Oak Ridge, Richland was a gated community with restricted access, but it looked more like a typical wartime American boomtown: the military profile was lower, and physical security elements like high fences, towers, and guard dogs were less evident.[118]
Canadian sites
Main article: Montreal Laboratory
British Columbia
Cominco had produced electrolytic hydrogen at Trail, British Columbia, since 1930. Urey suggested in 1941 that it could produce heavy water. To the existing $10 million plant consisting of 3,215 cells consuming 75 MW of hydroelectric power, secondary electrolysis cells were added to increase the deuterium concentration in the water from 2.3% to 99.8%. For this process, Hugh Taylor of Princeton developed a platinum-on-carbon catalyst for the first three stages while Urey developed a nickel-chromia one for the fourth stage tower. The final cost was $2.8 million. The Canadian Government did not officially learn of the project until August 1942. Trail's heavy water production started in January 1944 and continued until 1956. Heavy water from Trail was used for Chicago Pile 3, the first reactor using heavy water and natural uranium, which went critical on 15 May 1944.[119]
Ontario
The Chalk River, Ontario, site was established to rehouse the Allied effort at the Montreal Laboratory away from an urban area. A new community was built at Deep River, Ontario, to provide residences and facilities for the team members. The site was chosen for its proximity to the industrial manufacturing area of Ontario and Quebec, and proximity to a rail head adjacent to a large military base, Camp Petawawa. Located on the Ottawa River, it had access to abundant water. The first director of the new laboratory was Hans von Halban. He was replaced by John Cockcroft in May 1944, who in turn was succeeded by Bennett Lewis in September 1946. A pilot reactor known as ZEEP (zero-energy experimental pile) became the first Canadian reactor, and the first to be completed outside the United States, when it went critical in September 1945, ZEEP remained in use by researchers until 1970.[120] A larger 10 MW NRX reactor, which was designed during the war, was completed and went critical in July 1947.[119]
Northwest Territories
The Eldorado Mine at Port Radium was a source of uranium ore.[121]
Heavy water sites
Main article: P-9 Project
Although DuPont's preferred designs for the nuclear reactors were helium cooled and used graphite as a moderator, DuPont still expressed an interest in using heavy water as a backup, in case the graphite reactor design proved infeasible for some reason. For this purpose, it was estimated that 3 short tons (2.7 t) of heavy water would be required per month. The P-9 Project was the government's code name for the heavy water production program. As the plant at Trail, which was then under construction, could produce 0.5 short tons (0.45 t) per month, additional capacity was required. Groves therefore authorized DuPont to establish heavy water facilities at the Morgantown Ordnance Works, near Morgantown, West Virginia; at the Wabash River Ordnance Works, near Dana and Newport, Indiana; and at the Alabama Ordnance Works, near Childersburg and Sylacauga, Alabama. Although known as Ordnance Works and paid for under Ordnance Department contracts, they were built and operated by the Army Corps of Engineers. The American plants used a process different from Trail's; heavy water was extracted by distillation, taking advantage of the slightly higher boiling point of heavy water.[122][123]
Uranium
Ore
The key raw material for the project was uranium, which was used as fuel for the reactors, as feed that was transformed into plutonium, and, in its enriched form, in the atomic bomb itself. There were four known major deposits of uranium in 1940: in Colorado, in northern Canada, in Joachimsthal in Czechoslovakia, and in the Belgian Congo.[124] All but Joachimstal were in allied hands. A November 1942 survey determined that sufficient quantities of uranium were available to satisfy the project's requirements.[125] Nichols arranged with the State Department for export controls to be placed on uranium oxide and negotiated for the purchase of 1,200 short tons (1,100 t) of uranium ore from the Belgian Congo that was being stored in a warehouse on Staten Island and the remaining stocks of mined ore stored in the Congo. He negotiated with Eldorado Gold Mines for the purchase of ore from its refinery in Port Hope, Ontario, and its shipment in 100-ton lots. The Canadian government subsequently bought up the company's stock until it acquired a controlling interest.[126]
While these purchases assured a sufficient supply to meet wartime needs, the American and British leaders concluded that it was in their countries' interest to gain control of as much of the world's uranium deposits as possible. The richest source of ore was the Shinkolobwe mine in the Belgian Congo, but it was flooded and closed. Nichols unsuccessfully attempted to negotiate its reopening and the sale of the entire future output to the United States with Edgar Sengier, the director of the company that owned the mine, Union Minière du Haut Katanga.[127] The matter was then taken up by the Combined Policy Committee. As 30 percent of Union Minière's stock was controlled by British interests, the British took the lead in negotiations. Sir John Anderson and Ambassador John Winant hammered out a deal with Sengier and the Belgian government in May 1944 for the mine to be reopened and 1,720 short tons (1,560 t) of ore to be purchased at $1.45 a pound.[128] To avoid dependence on the British and Canadians for ore, Groves also arranged for the purchase of US Vanadium Corporation's stockpile in Uravan, Colorado. Uranium mining in Colorado yielded about 800 short tons (730 t) of ore.[129]
Mallinckrodt Incorporated in St. Louis, Missouri, took the raw ore and dissolved it in nitric acid to produce uranyl nitrate. Ether was then added in a liquid–liquid extraction process to separate the impurities from the uranyl nitrate. This was then heated to form uranium trioxide, which was reduced to highly pure uranium dioxide.[130] By July 1942, Mallinckrodt was producing a ton of highly pure oxide a day, but turning this into uranium metal initially proved more difficult for contractors Westinghouse and Metal Hydrides.[131] Production was too slow and quality was unacceptably low. A special branch of the Metallurgical Laboratory was established at Iowa State College in Ames, Iowa, under Frank Spedding to investigate alternatives. This became known as the Ames Project, and its Ames process became available in 1943.[132]
Uranium refining at Ames
A "bomb" (pressure vessel) containing uranium halide and sacrificial metal, probably magnesium, being lowered into a furnace
After the reaction, the interior of a bomb coated with remnant slag
A uranium metal "biscuit" from the reduction reaction
Isotope separation
Natural uranium consists of 99.3% uranium-238 and 0.7% uranium-235, but only the latter is fissile. The chemically identical uranium-235 has to be physically separated from the more plentiful isotope. Various methods were considered for uranium enrichment, most of which was carried out at Oak Ridge.[133]
The most obvious technology, the centrifuge, failed, but electromagnetic separation, gaseous diffusion, and thermal diffusion technologies were all successful and contributed to the project. In February 1943, Groves came up with the idea of using the output of some plants as the input for others.[134]
Contour map of the Oak Ridge area. There is a river to the south, while the township is in the north.
Oak Ridge hosted several uranium separation technologies. The Y-12 electromagnetic separation plant is in the upper right. The K-25 and K-27 gaseous diffusion plants are in the lower left, near the S-50 thermal diffusion plant. (The X-10 was for plutonium production.)
Centrifuges
The centrifuge process was regarded as the only promising separation method in April 1942.[135] Jesse Beams had developed such a process at the University of Virginia during the 1930s, but had encountered technical difficulties. The process required high rotational speeds, but at certain speeds harmonic vibrations developed that threatened to tear the machinery apart. It was therefore necessary to accelerate quickly through these speeds. In 1941 he began working with uranium hexafluoride, the only known gaseous compound of uranium, and was able to separate uranium-235. At Columbia, Urey had Karl Cohen investigate the process, and he produced a body of mathematical theory making it possible to design a centrifugal separation unit, which Westinghouse undertook to construct.[136]
Scaling this up to a production plant presented a formidable technical challenge. Urey and Cohen estimated that producing a kilogram (2.2 lb) of uranium-235 per day would require up to 50,000 centrifuges with 1-meter (3 ft 3 in) rotors, or 10,000 centrifuges with 4-meter (13 ft) rotors, assuming that 4-meter rotors could be built. The prospect of keeping so many rotors operating continuously at high speed appeared daunting,[137] and when Beams ran his experimental apparatus, he obtained only 60% of the predicted yield, indicating that more centrifuges would be required. Beams, Urey and Cohen then began work on a series of improvements which promised to increase the efficiency of the process. However, frequent failures of motors, shafts and bearings at high speeds delayed work on the pilot plant.[138] In November 1942 the centrifuge process was abandoned by the Military Policy Committee following a recommendation by Conant, Nichols and August C. Klein of Stone & Webster.[139]
Although the centrifuge method was abandoned by the Manhattan Project, research into it advanced significantly after the war with the introduction of the Zippe-type centrifuge, which was developed in the Soviet Union by Soviet and captured German engineers.[140] It eventually became the preferred method of Uranium isotope separation, being far more economical than the other separation methods used during WWII.[141]
Electromagnetic separation
Main article: Y-12 Project
Electromagnetic isotope separation was developed by Lawrence at the University of California Radiation Laboratory. This method employed devices known as calutrons, a hybrid of the standard laboratory mass spectrometer and the cyclotron magnet. The name was derived from the words California, university and cyclotron.[142] In the electromagnetic process, a magnetic field deflected charged particles according to mass.[143] The process was neither scientifically elegant nor industrially efficient.[144] Compared with a gaseous diffusion plant or a nuclear reactor, an electromagnetic separation plant would consume more scarce materials, require more manpower to operate, and cost more to build. Nonetheless, the process was approved because it was based on proven technology and therefore represented less risk. Moreover, it could be built in stages, and rapidly reach industrial capacity.[142]
A large oval-shaped structure
Alpha I racetrack at Y-12
Marshall and Nichols discovered that the electromagnetic isotope separation process would require 5,000 short tons (4,500 tonnes) of copper, which was in desperately short supply. However, silver could be substituted, in an 11:10 ratio. On 3 August 1942, Nichols met with Under Secretary of the Treasury Daniel W. Bell and asked for the transfer of 6,000 tons of silver bullion from the West Point Bullion Depository. "Young man," Bell told him, "you may think of silver in tons but the Treasury will always think of silver in troy ounces!"[145] Eventually, 14,700 short tons (13,300 tonnes; 430,000,000 troy ounces) were used.[146]
The 1,000-troy-ounce (31 kg) silver bars were cast into cylindrical billets and taken to Phelps Dodge in Bayway, New Jersey, where they were extruded into strips 0.625 inches (15.9 mm) thick, 3 inches (76 mm) wide and 40 feet (12 m) long. These were wound onto magnetic coils by Allis-Chalmers in Milwaukee, Wisconsin. After the war, all the machinery was dismantled and cleaned and the floorboards beneath the machinery were ripped up and burned to recover minute amounts of silver. In the end, only 1/3,600,000th was lost.[146][147] The last silver was returned in May 1970.[148]
Responsibility for the design and construction of the electromagnetic separation plant, which came to be called Y-12, was assigned to Stone & Webster by the S-1 Committee in June 1942. The design called for five first-stage processing units, known as Alpha racetracks, and two units for final processing, known as Beta racetracks. In September 1943 Groves authorized construction of four more racetracks, known as Alpha II. Construction began in February 1943.[149]
When the plant was started up for testing on schedule in October, the 14-ton vacuum tanks crept out of alignment because of the power of the magnets, and had to be fastened more securely. A more serious problem arose when the magnetic coils started shorting out. In December Groves ordered a magnet to be broken open, and handfuls of rust were found inside. Groves then ordered the racetracks to be torn down and the magnets sent back to the factory to be cleaned. A pickling plant was established on-site to clean the pipes and fittings.[144] The second Alpha I was not operational until the end of January 1944, the first Beta and first and third Alpha I's came online in March, and the fourth Alpha I was operational in April. The four Alpha II racetracks were completed between July and October 1944.[150]
A long corridor with many consoles with dials and switches, attended by women seated on high stools
Calutron Girls were young women who monitored calutron control panels at Y-12. Gladys Owens, seated in the foreground, was unaware of what she had been involved with until seeing this photo on a public tour of the facility 50 years later. Photo by Ed Westcott.[151]
Tennessee Eastman was contracted to manage Y-12 on the usual cost plus fixed-fee basis, with a fee of $22,500 per month plus $7,500 per racetrack for the first seven racetracks and $4,000 per additional racetrack.[152] The calutrons were initially operated by scientists from Berkeley to remove bugs and achieve a reasonable operating rate. They were then turned over to trained Tennessee Eastman operators who had only a high school education. Nichols compared unit production data, and pointed out to Lawrence that the young "hillbilly" girl operators were outperforming his PhDs. They agreed to a production race and Lawrence lost, a morale boost for the Tennessee Eastman workers and supervisors. The girls were "trained like soldiers not to reason why", while "the scientists could not refrain from time-consuming investigation of the cause of even minor fluctuations of the dials."[153]
Y-12 initially enriched the uranium-235 content to between 13% and 15%, and shipped the first few hundred grams of this to Los Alamos in March 1944. Only 1 part in 5,825 of the uranium feed emerged as final product. Much of the rest was splattered over equipment in the process. Strenuous recovery efforts helped raise production to 10% of the uranium-235 feed by January 1945. In February the Alpha racetracks began receiving slightly enriched (1.4%) feed from the new S-50 thermal diffusion plant. The next month it received enhanced (5%) feed from the K-25 gaseous diffusion plant. By August K-25 was producing uranium sufficiently enriched to feed directly into the Beta tracks.[154]
Gaseous diffusion
Main article: K-25
The most promising but also the most challenging method of isotope separation was gaseous diffusion. Graham's law states that the rate of effusion of a gas is inversely proportional to the square root of its molecular mass, so in a box containing a semi-permeable membrane and a mixture of two gases, the lighter molecules will pass out of the container more rapidly than the heavier molecules. The gas leaving the container is somewhat enriched in the lighter molecules, while the residual gas is somewhat depleted. The idea was that such boxes could be formed into a cascade of pumps and membranes, with each successive stage containing a slightly more enriched mixture. Research into the process was carried out at Columbia University by a group that included Harold Urey, Karl P. Cohen, and John R. Dunning.[155]
Oblique aerial view of an enormous U-shaped building
Oak Ridge K-25 plant
In November 1942 the Military Policy Committee approved the construction of a 600-stage gaseous diffusion plant.[156] On 14 December, M. W. Kellogg accepted an offer to construct the plant, which was codenamed K-25. A cost plus fixed-fee contract was negotiated, eventually totaling $2.5 million. A separate corporate entity called Kellex was created for the project, headed by Percival C. Keith, one of Kellogg's vice presidents.[157] The process faced formidable technical difficulties. The highly corrosive gas uranium hexafluoride would have to be used, as no substitute could be found, and the motors and pumps would have to be vacuum tight and enclosed in inert gas. The biggest problem was the design of the barrier, which would have to be strong, porous and resistant to corrosion by uranium hexafluoride. The best choice for this seemed to be nickel. Edward Adler and Edward Norris created a mesh barrier from electroplated nickel. A six-stage pilot plant was built at Columbia to test the process, but the Norris-Adler prototype proved to be too brittle. A rival barrier was developed from powdered nickel by Kellex, the Bell Telephone Laboratories and the Bakelite Corporation. In January 1944, Groves ordered the Kellex barrier into production.[158][159]
Kellex's design for K-25 called for a four-story 0.5-mile (0.80 km) long U-shaped structure containing 54 contiguous buildings. These were divided into nine sections. Within these were cells of six stages. The cells could be operated independently, or consecutively within a section. Similarly, the sections could be operated separately or as part of a single cascade. A survey party began construction by marking out the 500-acre (2.0 km2) site in May 1943. Work on the main building began in October 1943, and the six-stage pilot plant was ready for operation on 17 April 1944. In 1945 Groves canceled the upper stages of the plant, directing Kellex to instead design and build a 540-stage side feed unit, which became known as K-27. Kellex transferred the last unit to the operating contractor, Union Carbide and Carbon, on 11 September 1945. The total cost, including the K-27 plant completed after the war, came to $480 million.[160]
The production plant commenced operation in February 1945, and as cascade after cascade came online, the quality of the product increased. By April 1945, K-25 had attained a 1.1% enrichment and the output of the S-50 thermal diffusion plant began being used as feed. Some product produced the next month reached nearly 7% enrichment. In August, the last of the 2,892 stages commenced operation. K-25 and K-27 achieved their full potential in the early postwar period, when they eclipsed the other production plants and became the prototypes for a new generation of plants.[161]
Thermal diffusion
Main article: S-50 Project
The thermal diffusion process was based on Sydney Chapman and David Enskog's theory, which explained that when a mixed gas passes through a temperature gradient, the heavier one tends to concentrate at the cold end and the lighter one at the warm end. Since hot gases tend to rise and cool ones tend to fall, this can be used as a means of isotope separation. This process was first demonstrated by Klaus Clusius and Gerhard Dickel in Germany in 1938.[162] It was developed by US Navy scientists, but was not one of the enrichment technologies initially selected for use in the Manhattan Project. This was primarily due to doubts about its technical feasibility, but the inter-service rivalry between the Army and Navy also played a part.[163]
A factory with three smoking chimneys on a river bend, viewed from above
The S-50 plant is the dark building to the upper left behind the Oak Ridge powerhouse (with smoke stacks).
The Naval Research Laboratory continued the research under Philip Abelson's direction, but there was little contact with the Manhattan Project until April 1944, when Captain William S. Parsons, the naval officer in charge of ordnance development at Los Alamos, brought Oppenheimer news of encouraging progress in the Navy's experiments on thermal diffusion. Oppenheimer wrote to Groves suggesting that the output of a thermal diffusion plant could be fed into Y-12. Groves set up a committee consisting of Warren K. Lewis, Eger Murphree and Richard Tolman to investigate the idea, and they estimated that a thermal diffusion plant costing $3.5 million could enrich 50 kilograms (110 lb) of uranium per week to nearly 0.9% uranium-235. Groves approved its construction on 24 June 1944.[164]
Groves contracted with the H. K. Ferguson Company of Cleveland, Ohio, to build the thermal diffusion plant, which was designated S-50. Groves's advisers, Karl Cohen and W. I. Thompson from Standard Oil,[165] estimated that it would take six months to build. Groves gave Ferguson just four. Plans called for the installation of 2,142 48-foot-tall (15 m) diffusion columns arranged in 21 racks. Inside each column were three concentric tubes. Steam, obtained from the nearby K-25 powerhouse at a pressure of 100 pounds per square inch (690 kPa) and temperature of 545 °F (285 °C), flowed downward through the innermost 1.25-inch (32 mm) nickel pipe, while water at 155 °F (68 °C) flowed upward through the outermost iron pipe. The uranium hexafluoride flowed in the middle copper pipe, and isotope separation of the uranium occurred between the nickel and copper pipes.[166]
Work commenced on 9 July 1944, and S-50 began partial operation in September. Ferguson operated the plant through a subsidiary known as Fercleve. The plant produced just 10.5 pounds (4.8 kg) of 0.852% uranium-235 in October. Leaks limited production and forced shutdowns over the next few months, but in June 1945 it produced 12,730 pounds (5,770 kg).[167] By March 1945, all 21 production racks were operating. Initially the output of S-50 was fed into Y-12, but starting in March 1945 all three enrichment processes were run in series. S-50 became the first stage, enriching from 0.71% to 0.89%. This material was fed into the gaseous diffusion process in the K-25 plant, which produced a product enriched to about 23%. This was, in turn, fed into Y-12,[168] which boosted it to about 89%, sufficient for nuclear weapons.[169]
Aggregate U-235 production
About 50 kilograms (110 lb) of uranium enriched to 89% uranium-235 was delivered to Los Alamos by July 1945.[169] The entire 50 kg, along with some 50%-enriched, averaging out to about 85% enriched, were used in Little Boy.[169]
Plutonium
The second line of development pursued by the Manhattan Project used the fissile element plutonium. Although small amounts of plutonium exist in nature, the best way to obtain large quantities of the element is in a nuclear reactor, in which natural uranium is bombarded by neutrons. The uranium-238 is transmuted into uranium-239, which rapidly decays, first into neptunium-239 and then into plutonium-239.[170] Only a small amount of the uranium-238 will be transformed, so the plutonium must be chemically separated from the remaining uranium, from any initial impurities, and from fission products.[170]
X-10 Graphite Reactor
Main article: X-10 Graphite Reactor
Two workmen on a movable platform similar to that used by window washers, stick a rod into one of many small holes in the wall in front of them.
Workers load uranium slugs into the X-10 Graphite Reactor.
In March 1943, DuPont began construction of a plutonium plant on a 112-acre (0.5 km2) site at Oak Ridge. Intended as a pilot plant for the larger production facilities at Hanford, it included the air-cooled X-10 Graphite Reactor, a chemical separation plant, and support facilities. Because of the subsequent decision to construct water-cooled reactors at Hanford, only the chemical separation plant operated as a true pilot.[171] The X-10 Graphite Reactor consisted of a huge block of graphite, 24 feet (7.3 m) long on each side, weighing around 1,500 short tons (1,400 t), surrounded by 7 feet (2.1 m) of high-density concrete as a radiation shield.[171]
The greatest difficulty was encountered with the uranium slugs produced by Mallinckrodt and Metal Hydrides. These somehow had to be coated in aluminum to avoid corrosion and the escape of fission products into the cooling system. The Grasselli Chemical Company attempted to develop a hot dipping process without success. Meanwhile, Alcoa tried canning. A new process for flux-less welding was developed, and 97% of the cans passed a standard vacuum test, but high temperature tests indicated a failure rate of more than 50%. Nonetheless, production began in June 1943. The Metallurgical Laboratory eventually developed an improved welding technique with the help of General Electric, which was incorporated into the production process in October 1943.[172]
Watched by Fermi and Compton, the X-10 Graphite Reactor went critical on 4 November 1943 with about 30 short tons (27 t) of uranium. A week later the load was increased to 36 short tons (33 t), raising its power generation to 500 kW, and by the end of the month the first 500 mg of plutonium was created.[173] Modifications over time raised the power to 4,000 kW in July 1944. X-10 operated as a production plant until January 1945, when it was turned over to research activities.[174]
Hanford reactors
Main article: Hanford Site
Although an air-cooled design was chosen for the reactor at Oak Ridge to facilitate rapid construction, it was recognized that this would be impractical for the much larger production reactors. Initial designs by the Metallurgical Laboratory and DuPont used helium for cooling, before they determined that a water-cooled reactor would be simpler, cheaper and quicker to build.[175] The design did not become available until 4 October 1943; in the meantime, Matthias concentrated on improving the Hanford Site by erecting accommodations, improving the roads, building a railway switch line, and upgrading the electricity, water and telephone lines.[176]
An aerial view of the Hanford B-Reactor site from June 1944. At center is the reactor building. Small trucks dot the landscape and give a sense of scale. Two large water towers loom above the plant.
Aerial view of Hanford B-Reactor site, June 1944
As at Oak Ridge, the most difficulty was encountered while canning the uranium slugs, which commenced at Hanford in March 1944. They were pickled to remove dirt and impurities, dipped in molten bronze, tin, and aluminum-silicon alloy, canned using hydraulic presses, and then capped using arc welding under an argon atmosphere. Finally, they were subjected to a series of tests to detect holes or faulty welds. Disappointingly, most canned slugs initially failed the tests, resulting in an output of only a handful of canned slugs per day. But steady progress was made and by June 1944 production increased to the point where it appeared that enough canned slugs would be available to start Reactor B on schedule in August 1944.[177]
Work began on Reactor B, the first of six planned 250 MW reactors, on 10 October 1943.[178] The reactor complexes were given letter designations A through F, with B, D and F sites chosen to be developed first, as this maximised the distance between the reactors. They would be the only ones constructed during the Manhattan Project.[179] Some 390 short tons (350 t) of steel, 17,400 cubic yards (13,300 m3) of concrete, 50,000 concrete blocks and 71,000 concrete bricks were used to construct the 120-foot (37 m) high building.
Construction of the reactor itself commenced in February 1944.[180] Watched by Compton, Matthias, DuPont's Crawford Greenewalt, Leona Woods and Fermi, who inserted the first slug, the reactor was powered up beginning on 13 September 1944. Over the next few days, 838 tubes were loaded and the reactor went critical. Shortly after midnight on 27 September, the operators began to withdraw the control rods to initiate production. At first all appeared well but around 03:00 the power level started to drop and by 06:30 the reactor had shut down completely. The cooling water was investigated to see if there was a leak or contamination. The next day the reactor started up again, only to shut down once more.[181][182]
Fermi contacted Chien-Shiung Wu, who identified the cause of the problem as neutron poisoning from xenon-135, which has a half-life of 9.2 hours.[183] Fermi, Woods, Donald J. Hughes and John Archibald Wheeler then calculated the nuclear cross section of xenon-135, which turned out to be 30,000 times that of uranium.[184] DuPont engineer George Graves had deviated from the Metallurgical Laboratory's original design in which the reactor had 1,500 tubes arranged in a circle, and had added an additional 504 tubes to fill in the corners. The scientists had originally considered this overengineering a waste of time and money, but Fermi realized that by loading all 2,004 tubes, the reactor could reach the required power level and efficiently produce plutonium.[185] Reactor D was started on 17 December 1944 and Reactor F on 25 February 1945.[186]
Separation process
A contour map showing the fork of the Columbia and Yakima rivers and the boundary of the land, with seven small red squares marked on it
Map of the Hanford Site. Railroads flank the plants to the north and south. Reactors are the three northernmost red squares, along the Columbia River. The separation plants are the lower two red squares from the grouping south of the reactors. The bottom red square is the 300 area.
Meanwhile, the chemists considered the problem of how plutonium could be separated from uranium when its chemical properties were not known. Working with the minute quantities of plutonium available at the Metallurgical Laboratory in 1942, a team under Charles M. Cooper developed a lanthanum fluoride process for separating uranium and plutonium, which was chosen for the pilot separation plant. A second separation process, the bismuth phosphate process, was subsequently developed by Seaborg and Stanly G. Thomson.[187] This process worked by toggling plutonium between its +4 and +6 oxidation states in solutions of bismuth phosphate. In the former state, the plutonium was precipitated; in the latter, it stayed in solution and the other products were precipitated.[188]
Greenewalt favored the bismuth phosphate process due to the corrosive nature of lanthanum fluoride, and it was selected for the Hanford separation plants.[189] Once X-10 began producing plutonium, the pilot separation plant was put to the test. The first batch was processed at 40% efficiency but over the next few months this was raised to 90%.[174]
At Hanford, top priority was initially given to the installations in the 300 area. This contained buildings for testing materials, preparing uranium, and assembling and calibrating instrumentation. One of the buildings housed the canning equipment for the uranium slugs, while another contained a small test reactor. Notwithstanding the high priority allocated to it, work on the 300 area fell behind schedule due to the unique and complex nature of the 300 area facilities, and wartime shortages of labor and materials.[190]
Early plans called for the construction of two separation plants in each of the areas known as 200-West and 200-East. This was subsequently reduced to two, the T and U plants, in 200-West and one, the B plant, at 200-East.[191] Each separation plant consisted of four buildings: a process cell building or "canyon" (known as 221), a concentration building (224), a purification building (231) and a magazine store (213). The canyons were each 800 feet (240 m) long and 65 feet (20 m) wide. Each consisted of forty 17.7-by-13-by-20-foot (5.4 by 4.0 by 6.1 m) cells.[192]
submitted by freedomforg to OneWordBan

Subreddit Stats: SandersForPresident top posts from 2018-01-13 to 2019-01-13 02:23 PDT

Period: 364.37 days
Submissions Comments
Total 1000 81613
Rate (per day) 2.74 222.85
Unique Redditors 236 17829
Combined Score 1754341 770426

Top Submitters' Top Submissions

  1. 361296 points, 203 submissions: Chartis
    1. Paul Ryan: "If we lose the Senate, do you know who becomes Chair of the Senate Budget Committee? A guy named Bernie Sanders." #Vote (17458 points, 383 comments)
    2. Sen. Bernie Sanders calls for the pharmaceutical industry to testify under oath just as tobacco companies had to [10:06] (12005 points, 145 comments)
    3. US taxpayers are subsidizing the low pay at McDonald's to the tune of $1.2 billion a year... If McDonald's can afford to give its shareholders $7.7 billion, it can afford to pay all of its workers $15 an hour. -Bernie (8997 points, 417 comments)
    4. As Jeff Bezos Earns $191K Per Minute, Why Are NY & VA Giving Amazon $3 Billion in Corporate Welfare? (6973 points, 324 comments)
    5. U.N. report: With 40M in poverty, U.S. most unequal developed nation (6840 points, 406 comments)
    6. @Ocasio2018: The fact that Trump's SCOTUS pick Brett Kavanaugh believes that a President cannot be indicted is an automatic disqualification from Supreme Court consideration. Plain and simple. (5971 points, 234 comments)
    7. What happens next is up to all of us. (5432 points, 71 comments)
    8. @davidsirota: In 72 hours it’s gone from 'Alexandria Ocasio-Cortez is crazy for asking Dems to take a global apocalypse seriously', to Dems stampeding to support climate action. It’s as if a legislator having the guts to do the right thing can pressure other legislators to also do the right thing. (5387 points, 120 comments)
    9. @SenSanders: We should listen to what Sen. McConnell said in 2016. President Trump should not nominate, and the Senate should not confirm, a Supreme Court justice until the American people have had the opportunity to make their voices heard in November. (5136 points, 168 comments)
    10. @votermolly: At one of the first doors I knocked, I met young man named Jordan. He said, "Are you really going around to make sure everyone in my neighborhood can vote?" I said yes. He grabbed his coat and said, "I'm coming with you to help." This was his first, but not last, canvass. (5065 points, 141 comments)
  2. 149811 points, 45 submissions: relevantlife
    1. Bernie Sanders: "What I want to know is: if Sears has $25 million to give bonuses to executives, why is the company telling laid off employees they don't have the money to pay their severance?" (13676 points, 449 comments)
    2. The GOP freaks out when Ocasio-Cortez & Bernie suggest a 50%-70% tax rate to pay for medicare for all & a green new deal. That 50-70% margin would ONLY impact 13,000 of the richest families. The GOP is paid to represent the interests of the 13K richest families. We represent the other 300+ million. (12343 points, 889 comments)
    3. @SenSanders: "Anyone who tries to suppress the vote is simply a coward. If you can't win an election based on your ideas, then get the hell out of politics." (11550 points, 537 comments)
    4. Bernie Sanders says Amazon paid no federal income tax in 2017. He's right. In fact, Amazon estimates a $137 million rebate. (11425 points, 740 comments)
    5. Bernie Sanders: "There's no crisis at the border. President Trump, you want to talk about crises? 30 million Americans have no health insurance. Climate change threatens our planet. Half of older Americans have no retirement savings. 40 million are dealing with outrageous student debt." (9762 points, 401 comments)
    6. #Bernie2020 (8045 points, 851 comments)
    7. Ocasio-Cortez: "In my on-boarding to Congress, I get to pick my insurance plan. As a waitress, I had to pay more than TWICE what I’d pay as a member of Congress. It’s frustrating that Congressmembers would deny other people affordability that they themselves enjoy. Time for #MedicareForAll." (7614 points, 211 comments)
    8. Ocasio-Cortez: "Somewhere along the line, people in positions of influence decided that Flint water, Bronx air, or poor schools WEREN’T acceptable for their children, but could be accepted for someone else’s. And I will never think that is a reasonable compromise to make. So #CallMeRadical" (6396 points, 268 comments)
    9. Stacey Abrams, endorsed by Bernie, is being attacked over her debt. Her response: "These attacks are flat out lies. The truth? I had to choose between delaying tax payments and delaying my dad's cancer treatment. I made the right decision for my family." Get registered to vote, GA. #TeamAbrams (4877 points, 148 comments)
    10. Bernie just endorsed Abdul El-Sayed for Gov. of MI. Abdul wants $15/hr min. wage, single payer healthcare, tuition free college, legal weed, net neutrality, CJ reform AND he has vowed to never accept a dime of corporate money. Check him out! Primary is Aug. 7th! (4400 points, 202 comments)
  3. 93710 points, 68 submissions: thegeebeebee
    1. new rule (7740 points, 256 comments)
    2. Billionaires Made So Much Money Last Year They Could End Extreme Poverty Seven Times (4253 points, 435 comments)
    3. Get out of my head Larry Hubich! Whoever you are. (3938 points, 119 comments)
    4. Put the blame where it belongs (3889 points, 159 comments)
    5. Millennials (3671 points, 146 comments)
    6. 40 hour work weeks were a thing once. (3502 points, 358 comments)
    7. "The actual fear driving the attacks on my clothes, my checking account, my rent, isn’t that these folks are scared that I shouldn’t represent people in Congress. It’s fear that they’ve allowed their riches, their privilege, + their bias to put them to a point where they can’t." (3372 points, 111 comments)
    8. Bernie Sanders: "We don’t use bad words in the senate... we starve little children, we bomb buses of children, and give tax breaks to billionaires, but we don’t use bad words” (3268 points, 86 comments)
    9. Private prison threatens to close unless State or Federal officials fill up 300 more beds (3185 points, 109 comments)
    10. The richest 1% are on track to control two-thirds of the world’s wealth by 2030 (2857 points, 230 comments)
  4. 83265 points, 44 submissions: GrandpaChainz
    1. You're "just not that into politics?" Your boss is. Your landlord is. Your insurance company is. And every day they use their political power to keep your pay low, raise your rent, and deny you coverage. Its time to get into politics. (6708 points, 165 comments)
    2. Bernie Sanders’ Economic Inequality Town Hall Draws 1.7 Million Live Viewers (6343 points, 175 comments)
    3. Jimmy Carter: The U.S. Is an “Oligarchy With Unlimited Political Bribery” (6083 points, 133 comments)
    4. "Many who tweeted about my father today would have hated him 50 years ago. He was for the eradication of poverty and caring for poor people. No human was an alien to him because he believed this is a World House. And he asserted that inequality in healthcare is most inhumane." -Bernice King (5647 points, 242 comments)
    5. Ex-Senate Aide: Judge Brett Kavanaugh Has Lied Every Time He Has Testified Under Oath (5161 points, 121 comments)
    6. "We are not living in a poor nation. We are living in the wealthiest nation in the history of the world. How do we have one of the highest rates of childhood poverty of any major country? How could it be that we don't guarantee health care to all people? We must demand change." -Bernie Sanders (4347 points, 115 comments)
    7. President Trump is dead wrong if he believes the solution to the Postal Service's problems is to privatize it. I stand with the Postal Workers fighting to save and strengthen the Postal Service. - Bernie Sanders (3983 points, 268 comments)
    8. Bernie Sanders on Twitter: How absurd is it that we live in a country where Congress and many states give huge tax breaks to billionaires and large corporations, but fail to provide adequate funding for education? (3272 points, 51 comments)
    9. Alison Greene: I'm American but I lived in Australia for five years. I didn't worry about going to the doctor. If I needed to I went. I paid taxes & 2% of my taxes paid for my healthcare. So it wasn't free, I paid for it. And medicines didn't cost a zillion dollars. It was just easy. (2933 points, 141 comments)
    10. Bernie Sanders Isn’t Just Another White Male Candidate. His Nomination Would Be Historic. (2527 points, 230 comments)
  5. 81110 points, 64 submissions: gideonvwainwright
    1. @BernieSanders: Donald Trump thinks he's such a tough guy when he is tearing little kids at the border from their parents' arms, but he ain't such a tough guy when he has to deal with Putin and his billionaire friends in Saudi Arabia who just murdered a journalist. (5838 points, 181 comments)
    2. @BrianSchatz: If young people vote in numbers anywhere near the percentages of other generations they can get any policy they want. College affordability, climate, civil rights, healthcare, immigration whatever your generation decides. It’s your government if you just take it over. (5768 points, 253 comments)
    3. Thousands of Amazon workers receive food stamps. Now Bernie Sanders wants Amazon to pay up. (4199 points, 215 comments)
    4. Greg Palast: BREAKING: #Indiana has purged no less than 20,000 voters in violation of a federal court order and in total has cancelled the registrations of a mind-boggling 469,000 voters — the majority using suspect methods. (4010 points, 196 comments)
    5. Bernie Sanders To Hold Televised Town Hall On Economic Inequality March 19 (3160 points, 48 comments)
    6. Run, Bernie, Run. You could listen to the pundits, or you could listen to your heart. Bernie Sanders should run for president. (3124 points, 127 comments)
    7. Bernie in '89: End Profit-Driven Health Care (3073 points, 81 comments)
    8. George Pyle: Anything that isn’t welfare for the rich is now ‘socialism’ (2972 points, 34 comments)
    9. Ari Berman: Texas requires photo ID to vote. Now they're proposing closing 87 DMV offices where you get ID. 78 counties will have no DMV office. This is same state where you can vote with gun permit but not student ID (2803 points, 158 comments)
    10. Bernie Sanders talks universal Medicare, and 1.1 million people click to watch him (2728 points, 57 comments)
  6. 62788 points, 32 submissions: Harvickfan4Life
    1. Dem wins Kentucky state House seat in district Trump won by 49 points (6390 points, 172 comments)
    2. Love this man (5943 points, 198 comments)
    3. Bernie Sanders wins re-election in Vermont (4714 points, 100 comments)
    4. Progressives unseated all 59 Republican judges up for re-election in Houston in the midterms (4205 points, 187 comments)
    5. Beto O'Rourke on Texas' early voting turnout: 'If this continues, we win' (4179 points, 218 comments)
    6. Democrats must stop sabotaging candidates who can win in 2018 (3601 points, 228 comments)
    7. Dems flip New York state seat that Republicans have held for nearly four decades (3371 points, 88 comments)
    8. New poll finds race between Ted Cruz and Beto O’Rourke “too close to call” (3329 points, 257 comments)
    9. Alexandria Ocasio-Cortez didn't come to Washington to play nice (3076 points, 102 comments)
    10. More Than Half of Millennials Plan to Vote This November, Poll Finds (2578 points, 161 comments)
  7. 55623 points, 44 submissions: The1stCitizenOfTheIn
    1. @Snowden "Note: Gina Haspel participated in a torture program that involved beating an (innocent) pregnant woman's stomach, anally raping a man with meals he tried to refuse, and freezing a shackled prisoner until he died. She personally wrote the order to destroy 92 tapes of CIA torture." (4388 points, 245 comments)
    2. Rand Paul: We Have The Votes To Block Saudi Arms Deal (4011 points, 169 comments)
    3. Millennials are killing countless industries — but the Fed says it's mostly just because they're poor (3342 points, 212 comments)
    4. @BenJealous: When I am governor, we will finally pass universal pre-K in Maryland. How will we pay for it? By legalizing, regulating & taxing Cannabis for adult use. (3203 points, 111 comments)
    5. "Trump endorsed 75 candidates, of whom 21 or 28 percent won. This was the lowest win rate of the other national figures—nearly 50 percent of...Pence’s endorsements won, and over 50 percent of Obama’s and Biden’s endorsees won. Sanders does the best, as his endorsees won 66 percent of the time." (3074 points, 81 comments)
    6. Mercatus Study Finds Medicare for All Saves $300 Billion (2925 points, 125 comments)
    7. @Ocasio2018: Mark Zuckerberg plans on giving, of all people, the Koch Brothers “unprecedented access” to Facebook data? This is dangerous. The Koch brothers have been working for decades to impose their ideology in our elections. How is this in any way appropriate? (2494 points, 83 comments)
    8. Alexandria Ocasio-Cortez Is Using Instagram Stories to Lift the Veil on Congress and It's Genius (2418 points, 148 comments)
    9. How a Gay Friendly and “Very Pro-Choice” Trump Created the Most Anti-Choice, Anti-LGBT Administration in Generations (2187 points, 36 comments)
    10. David Sirota on the media's view of him and his association with Bernie (2076 points, 170 comments)
  8. 47802 points, 34 submissions: Greg06897
    1. Amazon founder Jeff Bezos' wealth increases by $275 million every single day. Meanwhile, Amazon workers have to rely on food stamps and public assistance just to survive. This is what a rigged economy is all about. - Bernie (11754 points, 761 comments)
    2. Who Wants Bernie to Run? (3615 points, 373 comments)
    3. John Kiriakou is the ONLY person to be imprisoned in connection with the CIA’s illegal torture program. He’s the one who exposed it. Gina Haspel helped cover up the torture program. She’s now head of the CIA. This is what an inverted moral universe looks like. (3436 points, 57 comments)
    4. DNC Chair Tom Perez proposes that the Democratic party now accept donations from fossil fuel political action committees - just two months after the DNC unanimously prohibited donations from fossil fuel companies. Please tell your elected officials & DNC reps that this is wrong. - Jane Sanders (2629 points, 186 comments)
    5. Trump didn’t win, the Democrats lost. We need to be more than anti-Trump. Young voters are important, give them something to vote for. - Bernie (2243 points, 108 comments)
    6. Trump loses to Bernie in new poll yet Corporate media describes the result as him nearly tying him in article (2218 points, 158 comments)
    7. Donald Trump Is the Biggest Middle-Class Tax Raiser of All Time (1786 points, 82 comments)
    8. MSNBC Ordered Ed Schultz Not To Cover Bernie Sanders, Then Fired Him - TYT (1705 points, 199 comments)
    9. Bernie Sanders still America’s Most Popular Senator — July 2018 (1542 points, 52 comments)
    10. 'I Work 3 Jobs And Donate Blood Plasma to Pay the Bills.' This Is What It’s Like to Be a Teacher in America (1516 points, 85 comments)
  9. 34941 points, 11 submissions: RanLearns
    1. Ted Cruz calls anyone frustrated with net neutrality a snowflake. Alexandria Ocasio-Cortez responds: "Snowflake? Aren’t you a sitting Senator? Also, Comcast paid you $36k to write this tweet. Campaign contributions are public record." (15039 points, 816 comments)
    2. Bernie just now on CNN: "I think the wall was a good idea in the 15th century, when the Chinese did it. It doesn't make sense now." (11357 points, 548 comments)
    3. "The Obama years proved that Republicans are going to portray Democrats as wild-eyed socialists no matter how incremental and market-friendly the reforms they propose are. So they might as well go big; the response from the opposition will be the same either way." (5276 points, 246 comments)
    4. Bernie: "The American people do not want a president who is compulsively dishonest, who is a bully, who actively represents the interests of the billionaire class, who is anti-science, and who is trying to divide us up." (868 points, 36 comments)
    5. When the rich paid their fair share... (590 points, 40 comments)
    6. Bernie: "As a father of 4 and a grandfather of 7, what we are talking about is nothing less than the future of this planet. And in this struggle, we can not, we must not fail." (410 points, 14 comments)
    7. Bernie Sanders warns Democrats about meddling in primaries. He would know. (319 points, 6 comments)
    8. Tulsi: "Canada legalized it - what's stopping us?" (296 points, 9 comments)
    9. Sign the petition to the Department of Education: do not use federal funds to arm teachers (295 points, 17 comments)
    10. Tell the DNC: Keep Fossil Fuel Money Out (250 points, 23 comments)
  10. 34811 points, 16 submissions: roku44
    1. Bernie Sanders Just Sidestepped Corporate Media to Promote Medicare for All to 1 Million Viewers (7151 points, 199 comments)
    2. Bernie Sanders: Trump 'has no political belief,' is 'a total phony' (3950 points, 103 comments)
    3. Bernie Sanders believes the results of the midterm elections prove a progressive could defeat President Donald Trump in the battle for the White House in 2020. (3869 points, 202 comments)
    4. A new poll found that a majority of Americans support a radical change to the US healthcare system (3684 points, 91 comments)
    5. The only people who won't benefit from Medicare for All are the insurance industry CEOs profiting off people's pain. (3395 points, 100 comments)
    6. Bernie Sanders has received donations from more Amazon workers than Barack Obama over the past 14 years (2531 points, 58 comments)
    7. Sanders unveils aggressive new bill targeting drug prices (2216 points, 65 comments)
    8. The wealthiest Americans used to pay for the government through taxes. Now they pay for the government by lending it money, with interest, and profit from the rest of us. This has to stop. (2173 points, 70 comments)
    9. Ex-UN chief Ban Ki-moon says US healthcare system is 'morally wrong' (1833 points, 32 comments)
    10. Amazon's decision to raise their minimum wage to $15 an hour means that Bernie Sanders' strategy worked brilliantly (1385 points, 76 comments)
  11. 29623 points, 13 submissions: lovely_sombrero
    1. "No more! Enough death. Enough killing. Enough destruction." -- Sen. @BernieSanders, addressing a mostly empty Senate chamber ahead of a vote later today on ending US support for Saudi war in Yemen (7477 points, 200 comments)
    2. Bernie: “we don’t use bad words in the senate... we starve little children, we bomb buses of children, and give tax breaks to billionaires, but we don’t use bad words” (6725 points, 209 comments)
    3. The Koch Brothers Commissioned a Survey of Americans and Found Most Like a $15 Minimum Wage, Free College, and Universal Health Care (3310 points, 238 comments)
    4. Bernie going after US media for not covering bank deregulation and instead focusing on a porn star (2371 points, 38 comments)
    5. Jeff Bezos Is Funding a Bunch of Pro-Gun, Anti-Abortion Republican Congressional Campaigns (2072 points, 113 comments)
    6. Democrat Cynthia Nixon has the chance to become New York's first female Governor, and its first openly LGBT Governor. That's exciting! But Hillary Clinton just endorsed her white, straight, male, corruption-tainted opponent. (1672 points, 272 comments)
    7. Bernie Sanders: "Absolutely" A Mistake For Perez To Endorse Cuomo, Bad Sign For 2020 (1549 points, 66 comments)
    8. If you live in |Alabama |California |Iowa |Montana |New Jersey |New Mexico then TODAY is Election Day and you’ve got Our Revolution endorsed candidates you can cast your ballot for! (1515 points, 61 comments)
    9. New bill in the Israeli Knesset criminalizes journalists: anyone who shoots video/photo,records soldiers...will be sentenced to 5 years imprisonment. (1326 points, 94 comments)
    10. Facebook's fact-checker calls the new head of Planned Parenthood a "monster" (649 points, 162 comments)
  12. 29104 points, 5 submissions: OregonTripleBeam
    1. Bernie Sanders: "Hey, Mr. President: Instead of copying France's military parade, why not copy France's health care system? Health care for all, low-cost prescription drugs, much less expensive." (16939 points, 646 comments)
    2. Sanders: "Hey, Mr. President. The only people who love the current system are you, the drug companies and insurance companies. 30 million Americans have no health insurance and we pay the highest prices in the world. We must guarantee health care to all, not take it away." (5342 points, 121 comments)
    3. Bernie Sanders backs bill to punish states with bad cannabis laws (3571 points, 99 comments)
    4. Congressman: "Here’s why Bernie Sanders' response nailed it. You have to beat Trump with specifics. Only when we stand for debt free college, Medicare for All, expanded social security, reigning in militarism, & infrastructure are we giving the working class a real alternative to choose." (2545 points, 35 comments)
    5. One of the many reasons why I support Bernie Sanders (707 points, 7 comments)

Top Commenters

  1. Chartis (33765 points, 1607 comments)
  2. BopTheDrass (11769 points, 754 comments)
  3. robotzor (3583 points, 352 comments)
  4. thesilverpig (3366 points, 101 comments)
  5. gideonvwainwright (3083 points, 108 comments)
  6. lovely_sombrero (2995 points, 80 comments)
  7. xxoites (2979 points, 129 comments)
  8. The1stCitizenOfTheIn (2952 points, 167 comments)
  9. Andy1816 (2944 points, 344 comments)
  10. mandelbratwurst (2904 points, 7 comments)
  11. ZRodri8 (2605 points, 200 comments)
  12. Demonweed (2590 points, 122 comments)
  13. thegeebeebee (2531 points, 362 comments)
  14. Antarctica-1 (2490 points, 100 comments)
  15. Kealion (2314 points, 17 comments)
  16. teuast (2234 points, 238 comments)
  17. MyOther_UN_is_Clever (2153 points, 170 comments)
  18. Thangleby_Slapdiback (2133 points, 324 comments)
  19. zeshon (2057 points, 4 comments)
  20. Kalepsis (1980 points, 36 comments)
  21. MoistPockets (1971 points, 34 comments)
  22. The_Original_Gronkie (1950 points, 110 comments)
  23. TheVermonster (1875 points, 89 comments)
  24. theodorAdorno (1863 points, 250 comments)
  25. Terrible_Inspection (1817 points, 88 comments)
  26. revolutionhascome (1758 points, 136 comments)
  27. lennybird (1688 points, 94 comments)
  28. RanLearns (1674 points, 107 comments)
  29. Silas06 (1664 points, 45 comments)
  30. Harvickfan4Life (1571 points, 97 comments)
  31. filmantopia (1562 points, 159 comments)
  32. xoites (1522 points, 84 comments)

Top Submissions

  1. Paul Ryan: "If we lose the Senate, do you know who becomes Chair of the Senate Budget Committee? A guy named Bernie Sanders." #Vote by Chartis (17458 points, 383 comments)
  2. Bernie Sanders: "Hey, Mr. President: Instead of copying France's military parade, why not copy France's health care system? Health care for all, low-cost prescription drugs, much less expensive." by OregonTripleBeam (16939 points, 646 comments)
  3. Ted Cruz calls anyone frustrated with net neutrality a snowflake. Alexandria Ocasio-Cortez responds: "Snowflake? Aren’t you a sitting Senator? Also, Comcast paid you $36k to write this tweet. Campaign contributions are public record." by RanLearns (15039 points, 816 comments)
  4. Bernie Sanders: "What I want to know is: if Sears has $25 million to give bonuses to executives, why is the company telling laid off employees they don't have the money to pay their severance?" by relevantlife (13676 points, 449 comments)
  5. The GOP freaks out when Ocasio-Cortez & Bernie suggest a 50%-70% tax rate to pay for medicare for all & a green new deal. That 50-70% margin would ONLY impact 13,000 of the richest families. The GOP is paid to represent the interests of the 13K richest families. We represent the other 300+ million. by relevantlife (12343 points, 889 comments)
  6. Sen. Bernie Sanders calls for the pharmaceutical industry to testify under oath just as tobacco companies had to [10:06] by Chartis (12005 points, 145 comments)
  7. Amazon founder Jeff Bezos' wealth increases by $275 million every single day. Meanwhile, Amazon workers have to rely on food stamps and public assistance just to survive. This is what a rigged economy is all about. - Bernie by Greg06897 (11754 points, 761 comments)
  8. Sanders: "President Trump, please explain to me how spending $30 million on a military parade is going to help struggling families more than providing 21.4 million meals through SNAP, covering benefits for 727,000 pregnant women or sending 28,000 kids to Head Start?" by FosterWright (11680 points, 255 comments)
  9. @SenSanders: "Anyone who tries to suppress the vote is simply a coward. If you can't win an election based on your ideas, then get the hell out of politics." by relevantlife (11550 points, 537 comments)
  10. Bernie Sanders says Amazon paid no federal income tax in 2017. He's right. In fact, Amazon estimates a $137 million rebate. by relevantlife (11425 points, 740 comments)

Top Comments

  1. 2455 points: mandelbratwurst's comment in A Democrat no one's heard of just raised triple the amount Ted Cruz did, despite rejecting special interest money
  2. 2179 points: Kealion's comment in Ted Cruz calls anyone frustrated with net neutrality a snowflake. Alexandria Ocasio-Cortez responds: "Snowflake? Aren’t you a sitting Senator? Also, Comcast paid you $36k to write this tweet. Campaign contributions are public record."
  3. 2065 points: deleted's comment in Cops plead ‘allow ICE employees to go home to their families’ after protesters blockade prison in Portland
  4. 2054 points: zeshon's comment in Poll finds Bernie would beat Oprah
  5. 1874 points: thesilverpig's comment in Bernie just now on CNN: "I think the wall was a good idea in the 15th century, when the Chinese did it. It doesn't make sense now."
  6. 1545 points: Kalepsis's comment in The $717 Billion Defense Bill That Just Breezed Through the Senate Should Be a National Scandal
  7. 1444 points: MoistPockets's comment in Paul Ryan: "If we lose the Senate, do you know who becomes Chair of the Senate Budget Committee? A guy named Bernie Sanders." #Vote
  8. 1343 points: gayporn111's comment in Elizabeth Warren Announces She Is Running for President
  9. 1306 points: imurphs's comment in The American medical system, not rich enough to live...
  10. 1245 points: Silas06's comment in Home Depot founder on Bernie Sanders: ‘This is the antichrist!’
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