Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 10-90
... haulage are higher . Tonnage produced per shift on 1 level affects method of haulage ( Sec 11 ) . Where small , it may be possible to install mechanical haulage on every second or third level , ore from levels above being transferred to ...
... haulage are higher . Tonnage produced per shift on 1 level affects method of haulage ( Sec 11 ) . Where small , it may be possible to install mechanical haulage on every second or third level , ore from levels above being transferred to ...
Halaman 10-180
... haulage drifts above 420 - level were at 100 - ft vert intervals ; below , 200 ft apart . In the flat section at the " nose " of orebody , intermediate haulageways were driven in footwall on the 220- , 280- , and 350- levels , ore from ...
... haulage drifts above 420 - level were at 100 - ft vert intervals ; below , 200 ft apart . In the flat section at the " nose " of orebody , intermediate haulageways were driven in footwall on the 220- , 280- , and 350- levels , ore from ...
Halaman 10-291
... Haulage level 8'x7 ' 15 · 40 ' -- 15 -W 1 W Floor of under- cuts Grizzly level Haulage level W Undercutting raises HK 北 KH Grizzly level G Grizzly level 5'x1 R H Mining raise Chute raise 24 ' Grizzlies Chute raises , 5'x5 ' Haulage ...
... Haulage level 8'x7 ' 15 · 40 ' -- 15 -W 1 W Floor of under- cuts Grizzly level Haulage level W Undercutting raises HK 北 KH Grizzly level G Grizzly level 5'x1 R H Mining raise Chute raise 24 ' Grizzlies Chute raises , 5'x5 ' Haulage ...
Edisi yang lain - Lihat semua
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