Mining Engineers' Handbook, Volume 1Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 2-13
... side altering its position with respect to other . One side may rise , sink , move laterally , or ( as resultant of all 3 movements ) diagonally , with respect to other side . In nearly all cases the fault plane or planes are inclined ...
... side altering its position with respect to other . One side may rise , sink , move laterally , or ( as resultant of all 3 movements ) diagonally , with respect to other side . In nearly all cases the fault plane or planes are inclined ...
Halaman 2-14
... side has gone up , or down , or laterally . Some observers have thought that by scraping finger nail or finger across the grooves , one side of them will be found steeper than the other . If the grooves are tested in slickensides on ...
... side has gone up , or down , or laterally . Some observers have thought that by scraping finger nail or finger across the grooves , one side of them will be found steeper than the other . If the grooves are tested in slickensides on ...
Halaman 11-5
... side , it may be better than the revolving type . The V can be made high and narrow , or low and wide as required by gangway and chute clear- ances . It has no doors and can readily be made water tight . Fig 9a is a V - bottom , rolling ...
... side , it may be better than the revolving type . The V can be made high and narrow , or low and wide as required by gangway and chute clear- ances . It has no doors and can readily be made water tight . Fig 9a is a V - bottom , rolling ...
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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