found: Amended closure plan, degreaser sludge container, 1993:t.p. (LTV Steel Company, Inc.)
found: NUCMC data from Mahoning Valley Historical Society for Libert-Youngstown Sheet & Tube Company-Lykes collection, 1969-1978(Youngstown Sheet & Tube Company merged with Lykes Corporation in 1969; properties bought by LTV in 1978; [name continued as Youngstown Sheet and Tube Company])
found: RLIN, Apr. 27, 1998(Youngstown Sheet and Tube Company inc. 1900; grew to be one of the six largest basic steel companies in the U.S.; on May 28, 1969 merged with Lykes Corporation to form Lykes-Youngstown Corporation; merger proved unsuccessful and after retrenchment, properties sold to LTV Steel Company)