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IBM's card manufacturing plant in Greencastle,
Ind., was officially dedicated on October 30,
1954. The wide expanse of glass that completely
encircled the plant's 184,000 square feet of floor
space provided interior lighting relatively unknown
in the majority of contemporary industrial buildings.
Above the windows were 7,400 glass bricks to filter
still more light to the interior. At its dedication,
the facility had two 420-ton air conditioning
machines and more than 19,300 feet of florescent
tubing to provide artificial lighting. To supplement
the building-wide air conditioning system, the
structure was topped by a ponded roof, which,
covered with three inches of water in the summer,
served as an insulator.
In May 1962, Greencastle manufactured and shipped more products per day than any other IBM plant -- a daily average of hundreds of shipments and more than two million pounds of products sent to customers across the United States.
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