HARRISBURG, Pa., March 28, 1979 (UPI) -- A cooling system leak, probably the most serious nuclear reactor accident to date, today released radiation and triggered an automatic shutdown of Three Mile island nuclear .power plant, forcing evacuation of the f Blaine Fabian, spokesman for Metropolitan Edison Co., part-owner of the plant, located near Harrisburg, said some radioactive steam escaped and was vented into the atmosphere.

HERSHEY, Pa., March 31, 1979 (UPI) - Little Mario Baylor loved the warm March sun, the magic show and the chocolate bars. For him, it was a perfect day.

WASHINGTON, March 31, 1979 (UPI) - President Carter says the Three Mile Island nuclear plant accident "will probably lead inexorably" to more stringent safety standards for America's nuclear power facilities. Carter was briefed repeatedly yesterday on developments at the plant in the Harrisburg, Pa., area where severe damage resulted in release of uncontrolled radioactive emissions, and he left word on retiring to be awakened at any hour during the night.

WASHINGTON, March 31, 1979 (UPI) - Nuclear engineers face unprecedented decisions on what to do in the next few days at Three Mile Island power plant in Pennsylvania to avert further emergencies.

Scientists the world over are using the nuclear plant at Three Mile Island as a laboratory for what can go wrong with atomic energy.

HARRISBURG, Pa., April 3, 1979 (UPI) - Federal officials today cautiously expressed hope that the worst is over in the Three Mile Island nuclear crisis but said the reactor's core appeared to be damaged badly enough that it may have to be scrapped.

WASHINGTON, April 4, 1979 (UPI) - Government officials told Congress today the troubled Three Mile Island nuclear power plant is no longer of urgent concern and also said that Middletown, Pa., area residents have received only as much radiation as two chest X-rays.