Construction of the Unit 1 reactor began on Three Mile Island in May 1968, with the production of commercial electricity beginning in 1974. Approval for the construction of the Unit 2 reactor was granted in November 1969, and it was only producing commerc
Construction of the Unit 1 reactor began on Three Mile Island in May 1968, with the production of commercial electricity beginning in 1974. Approval for the construction of the Unit 2 reactor was granted in November 1969, and it was only producing commerc