Double Elevators' Speed to Hoist "Pay Dirt"

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OS_ENG_v22_i04_005.pdf (70.17 KB)

Date

1939-03

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Ohio State University, College of Engineering

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Citation

Ohio State Engineer, vol. 22, no. 4 (March, 1939), 5.

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http://hdl.handle.net/1811/35581

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Ohio State Engineer: Volume 22, no. 4 (March, 1939)