Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 712
r. W.Shanly, contractor: Memorandum of Drilling in Heading from Central Shaft, August 11th to 27th—10 Shifts.—Totaltime occupied in drilling, 38 hours 40 minutes = 2,320 minutes. Total number of holes drilled, 120.Total number of inches drilled, 16,948. Average depth of holes, 11 ft. 8 in. Average… … This style of carriage is used in G82 ROCK-DRILLS. 3C99.
Mechanical engineering -- Dictionaries
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