1991 Press Photo Harnischfeger Corp. Dam Gate Hoist At National Ave. Plant

A dam gate hoist being manufactured by Harnischfeger Corp., lifts and lowers two 20-ton weights Friday at the company's National Ave. plant. It did that three times and then held the weights aloft for an hour in a test conducted by the St. Paul district o

Photo is dated 1991.

Photo measures 7 x 10 inches.

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