After a luncheon for 142 in Pittsburgh last week Carrier Corp.'s President Lloud* Wampler flipped a switch which turned on the world's biggest private air-conditioning system: a $5,000,000 complex which cools 68 floors in the three-building Gateway Center in Pittsburgh's new Golden Triangle of modern office buildings. It was a fitting event, for last week Carrier also celebrated the 50th anniversary of the air-conditioning industry fathered by its founder, Willis Carrier.

In those 50 years, air conditioning, which was once considered a luxury, has become standard practice. In the last ten years,...

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