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Uranium mill tailings are primarily the sandy process waste material from a conventional uranium mill. [1] Milling is the first step in making fuel for nuclear reactors from natural uranium ore. The uranium extract is transformed into yellowcake. [2] The raw uranium ore is brought to the surface and
The Moab uranium mill tailings pile is a uranium mill waste pond situated alongside the Colorado River, currently under the control of the U.S. Department of Energy. Locals refer to it as the Moab Tailings Pile. In 1952 U.S. geologist Charles Steen found the largest uranium deposit in the United States near Moab, Utah. The uranium was processed ...
The Uranium Mill Tailings Remedial Action (UMTRA) Project was created by the United States Department of Energy (DOE) to monitor the cleanup of uranium mill tailings, a by-product of the uranium concentration process that poses risks to the public health and environment. The Uranium Mill Tailings Radiation Control Act passed by Congress in 1978 ...
At around 5:30 am on July 16, 1979, a previously identified crack opened into a 20-foot-breach (6.1 m) in the south cell of United Nuclear Corporation's Church Rock temporary uranium mill tailings disposal pond, and 1,100 short tons (1,000 t) of solid radioactive mill waste and about 93 million US gallons (350,000 m 3) of acidic, radioactive tailings solution flowed into Pipeline Arroyo, a ...
The tailings were used in sewer and road construction. Tailings were also made available to private citizens and contractors, who utilized them to make concrete and mortar for their homes and as filler material. [5] The mill was decommissioned in 1970 as a result of the US Department of Energy's Uranium Mill Tailings Remedial Action project.
Mill tailings are sometimes referred to as 11(e)2 wastes, from the section of the US Atomic Energy Act of 1946 that defines them. Uranium mill tailings typically also contain chemically hazardous heavy metal such as lead and arsenic. Vast mounds of uranium mill tailings are left at many old mining sites, especially in Colorado, New Mexico, and ...
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Shiprock, New Mexico uranium mill aerial photo Moab uranium mill tailings pile. In the post-war period mine workers in the Four Corners area were exposed to and brought home large amounts of radiation in the form of dust on their clothing and skin.