Excavation HandbookMcGraw-Hill, 1981 - 1000 halaman |
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Halaman 2-13
... mineral for which they are mined , some ores providing several minerals and native elements . The most common mineral for the element desired is given . Table 2-2 includes metallic and nonmetallic ores most com- monly mined in open ...
... mineral for which they are mined , some ores providing several minerals and native elements . The most common mineral for the element desired is given . Table 2-2 includes metallic and nonmetallic ores most com- monly mined in open ...
Halaman 4
... mineral or near mineral state , and the weights do not allow for the containing gangues of the ore body . The weight of the mineral is constant , with a set specific gravity , but the weight of the gangue , such as the associated earthy ...
... mineral or near mineral state , and the weights do not allow for the containing gangues of the ore body . The weight of the mineral is constant , with a set specific gravity , but the weight of the gangue , such as the associated earthy ...
Halaman 2-19
... ( mineral ) : description of , 2-11 examples of , 5-2 , 11-132 , 13-78 Charles ' law , definition and equation , 11-82 Chippers , log : costs hourly , 8-11 example of , 9-23 13-122 specifications for , 13-118 to 13-120 summary , 13-127 ...
... ( mineral ) : description of , 2-11 examples of , 5-2 , 11-132 , 13-78 Charles ' law , definition and equation , 11-82 Chippers , log : costs hourly , 8-11 example of , 9-23 13-122 specifications for , 13-118 to 13-120 summary , 13-127 ...
Isi
ROCK WEATHERING | 3-4 |
LANDFORMS AND GEOMORPHOLOGY | 4-4 |
OPENCUT EXCAVATIONS | 5-3 |
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Istilah dan frasa umum
alluvium average axles backhoe blasthole borrow pit brake horsepower bucket bucket loader bulldozer calculated California capacity clearing and grubbing cofferdam compaction compactor compressor conveyor cost of ownership crawler-tractor cubic yard cybm cybm/h cysm depth diameter diesel engine dipper Direct job unit dragline dredge dumping efficiency electric embankment equation estimated explosives factor fill freeway friction ft/min ft/s gal/min grade granite haul road haulage head loss heavyweight hoist hole horsepower hourly production igneous igneous rock illustrates job unit cost lb/in² length limestone loading machine machinery material maximum medium metamorphic rocks mi/h off-the-road open-pit mining ownership and operation percent pipe pump quarry r/min rock excavation rock formation rock haulers rock-earth rolling resistance scraper sedimentary rock shovel shown in Figure slope soft specifications Table tare weight tire tons tow-type tractor tractor-bulldozer tractor-rippers truck valve velocity water wagon weight wellpoint wheels-tires width Work-cost indicator yd³