Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 6-21
... close to the face as possible without danger of its being injured by blasting . Blowing vs exhaust systems . The relative merits of continuous blowing , continuous exhausting , and blowing followed by exhausting , are still debated ...
... close to the face as possible without danger of its being injured by blasting . Blowing vs exhaust systems . The relative merits of continuous blowing , continuous exhausting , and blowing followed by exhausting , are still debated ...
Halaman 10-244
... close to face and stowed close to back , the stulls being buried . Waste was trammed to advancing face of rooms through a small drift in the back directly over the sill - floor sets ; cars were loaded from temporary gates built into ...
... close to face and stowed close to back , the stulls being buried . Waste was trammed to advancing face of rooms through a small drift in the back directly over the sill - floor sets ; cars were loaded from temporary gates built into ...
Halaman 10-427
... close to the stope wall , and continued upward a little in advance of the rising level of sand ( compare Matahambre , above ) ; this raise later serves as air and manway , when the pillar is to be mined . Wherever possible , sand is de ...
... close to the stope wall , and continued upward a little in advance of the rising level of sand ( compare Matahambre , above ) ; this raise later serves as air and manway , when the pillar is to be mined . Wherever possible , sand is de ...
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Istilah dan frasa umum
angle Ariz aver bench black powder blasting block bottom broken caps cars caving chalcocite chalcopyrite churn drills chutes coal copper core cost per ft cribbed cross-sec crosscuts crystals Data deposits depth diam driven dynamite excavation explosives face filled stopes floor footwall ft deep ft high ft long ft wide fuse gelatin grizzly ground hammer drills hanging wall haulage level hematite hoisting holes horiz igneous rocks inclined intervals iron jackhammers labor lagging limestone loading magnetite manway Mesabi Range method minerals mining mucking orebody pillars pipe porphyry posts powder pump pyrite pyrrhotite quartz quartzite raises rock rods samples sand schist scraper sets shift shovel shrinkage stopes side sill sinking slice sludge soft sphalerite square-set steel stope stulls sub-level sulphide surface Table thick timber tons top-slicing Total tunnel usually veins ventilation waste width