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Chain and gear drive system in a corrosive atmosphere.

Chain and gear drive system in a corrosive atmosphere.

Worker with damaged steel hat being congratulated by supervisors.

Worker with damaged steel hat being congratulated by supervisors.

Completing inside room with concrete block wall - Otto Pearson.

Completing inside room with concrete block wall - Otto Pearson.

Completing inside room with concrete block wall - Otto Pearson.

Completing inside room with concrete block wall - Otto Pearson.

Completing inside room with concrete block wall - Otto Pearson.

Presentation of plaques to painters, truck drivers, carpenters, and insulators.
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