Three Mile Island radiation caused by pipe cutting

Three Mile Island radiation caused by pipe cutting:

Harrisburg, Pa. - Officials are trying to determine how their employees to cut a pipe radioactive dust blown up by the Three Mile Island nuclear plant.

Plant spokesman Ralph DeSantis said Monday that the public was not threatened Saturday when a dozen workers were exposed to radiation.

The central Pennsylvania plant has two reactors. One is a partial meltdown suffered in 1979 and was mothballed. The others are still in use but was closed since last month, so that the steam generators can be replaced.

DeSantis said radioactive dust resulting from the reactor cooling pipes of the employees were cut. He said a radiation monitor "temporarily went up slightly, but a subsequent study found no contamination from outside.

For the U.S. Nuclear Regulatory Commission said the radiation was not