Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 271
lowing information should be furnished the manufacturer: In Quarrying-. 1. Give the location of work, whether on surface or under-ground. 2. Describe the nature of the rock, whether sandstone, slate,limestone, granite, marble, etc. State whether the material ishard, medium or soft. 3. Is the quarry… … Fig. 91. The Broncho Channeler on a Side Hill at theWaverley Marble Quarries, Tuckahoe, N, Y. 6. What is the average depth of the holes to be drilled?(This is important.) 7. What is to be the average diameter of the holes at thebottom? If undecided, state whether dynamite or black powderis to be…
Contractors' operations · Building
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