Rock Drilling, with Particular Reference to Open Cut Excavation and Submarine Rock RemovalJ. Wiley & sons, 1911 - 319 pagina's |
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Amherstburg average depth bastard granite blacksmith boiler Cents chuck Coal Cofferdam compressor cost of drilling cost per cubic cu.yds cubic yard blasted cubic yard pay cutting minute cutting speed cycle Dana deck Depth of holes Descriptive Geometry Detroit River diameter drill boat drill day drill hour drill per day drill per shift drillers drilling and blasting dynamite dynamite per cubic Engineering explosive feet drilled Feet per drill foreman glycerin grade hard hard rock helpers hydraulic idle inches Ingersoll-Rand Interest and depreciation Large 12mo length of feed Limestone lin.ft Lineal feet lineal foot drilled loosened machine material Mechanics Miscellaneous delays Moving drill mucking nitroglycerin Number of holes operation overhead charges plant powder pressure pump quarry sand pipe scow soft rocks spud standard basis sticks stone stroke tons Total cost Total drilling tripod wages yards of pay yards pay rock ΙΟ
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