The worst nuclear accident in U.S. history: July 16, 1979, Navajo Reservation

July 16th, 2009, marked the 30th anniversary of the worst nuclear accident in U.S. history, when, at 5:00 A.M., 1100 tons of uranium mining tailings, and 100 million gallons of radioactive water burst through United Nuclear's earthen dam, into the Rio Puerco, at a uranium mine in Church Rock, New Mexico, on the Navajo Reservation. 

Three hours and 50 miles downriver, in Gallup, New Mexico, employees of the Nuclear Regulatory Commission tested the Rio Puerco and found it 7,000 times more radioactive than was then deemed allowable.

Cross post.  Full text at Examiner.com.Navajo Reservation. : Navajo Reservation.Navajo Reservation.