The Port of New York Authority awarded the first contracts yesterday for the super structure of the World Trade Center, whose twin, 110-story towers will be the tallest buildings in the world.
Fifty-thousand tons of steel for structural bearing walls was purchased from the Pacific Car and Foundry Company of Seattle. Three contracts for other forms of steel went to the Laclede Steel Company of St. Louis, the Granite City Steel Company of Granite City, Ill., and the Karl Koch Erecting Company of the Bronx.
Karl Koch also received the contract for erecting all the steel in the towers. The sixth contract, for aluminum exterior wall, went to the Aluminum Company of America of Pittsburgh.