Word: logs
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Dates: during 1940-1949
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Plywood is made by putting a big log into a peeling machine, which strips off the thin wood sheets like wrapping paper from a roll. When the sheets are cut to size, the sandwiches are made in presses which deliver squeezes up to 200 Ib. per sq. in. The San Francisco World's Fair, which accounted for 10,000,000 sq. ft. of fir plywood, used plywood 29 layers thick for parts of its Colonnade of States...