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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 ...
On July 16, 1979, the tailings pond at United Nuclear Corporation's uranium mill in Church Rock, New Mexico, breached its dam. More than 1,000 tons of radioactive mill waste and 93 million gallons of acidic, radioactive tailings solution and mine effluent flowed into the Puerco River , and contaminants traveled 80 miles (130 km) downstream to ...
The mill was operational from June 1977 to May 1982. [38] At around 5:30am on 16 July 1979, a 20ft breach opened in the south cell of the facility's uranium mill tailings pond, releasing 1,000 tonnes of solid radioactive mill waste and 93 million US gallons acidic, radioactive tailings solution into Pipeline Arroyo, a tributary of the Puerco River.
The Church Rock uranium mill spill is one of the worst radioactive spills in U.S. history. On July 16, 1979, a tailings pond at the Church Rock uranium mill, owned by United Nuclear Corporation, breached its dam and 93 million gallons (350,000 m 3) of radioactive, acidic uranium tailings solution flowed into the North Fork of the Puerco River. [10]
The tailings dam failure that caused the Church Rock uranium mill spill on July 16, 1979, remains the largest release of radioactive material in U.S. history. [18] [19] In May 2007, the U.S. Environmental Protection Agency (EPA) announced that it would join the Navajo Nation EPA in cleaning up radioactive contamination near the Church Rock mine ...
The Church Rock Uranium Mill Spill occurred in the United States when a uranium mill tailings disposal pond breached its dam. Over 1,000 tons of radioactive mill waste and millions of gallons of mine effluent flowed into the Puerco River, and contaminants traveled 80 miles (130 km) downstream to Navajo County, Arizona.
July 1979: Church Rock Uranium Mill Spill in New Mexico, USA, when United Nuclear Corporation's uranium mill tailings disposal pond breached its dam. Over 1,000 tons of radioactive mill waste and millions of gallons of mine effluent flowed into the Puerco River, and contaminants traveled downstream. [83] 1980s
the Merriespruit tailings dam disaster, South Africa occurred on the night of 22 February 1994 when a tailings dam failed and flooded the suburb of Merriespruit, Virginia. Seventeen people were killed as a result. the Church Rock uranium mill spill in New Mexico, 16 July 1979, the largest release of radioactive waste in U.S. history [17]