Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Hard rock mines"”.
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A hard kind of labor: an archaeological analysis of small-scale hard rock mines in northeast Washington
<p>Small-scale mines from the early 20th century are scattered across northeast Washington and specifically the Colville National Forest, but few have been investigated archaeologically. This thesis seeks to place one such mine, R306 Mining Camp, within its historical context and develop a more …
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Inhibition of iron-oxidizing bacteria in wastes from coal and hard-rock mines using the anti-bacterial agent
… was completed using a coal mine waste and a hard-rock mine waste. Eight columns containing 7kg of rock were established for each substrate. Three doses of NServe (22% nitrapyrine) were applied once at the beginning of this study: a high dose 2200 mg/kg, a medium dose 220 mg/kg, and a low dose …
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Investigation of factors governing the stability of stope panels in hard rock mines in order to define a suitable design methodology for shallow mining operations
Instability in stope panels in shallow mines manifests itself as rockfalls from the hangingwall. Rockfalls from unstable stope panels vary in size from rockfalls between support units, to rockfalls spanning between pillars or solid abutments, to rockfalls bridging several panels and pillars. A …
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Optimizing Pillar Design for Improved Stability and Enhanced Production in Underground Stone Mines
… excavations require continuous assessment of rock mass behavior for maximizing safety. Optimizing pillar design is essential for preventing hazardous incidents and improving production in room-and-pillar mines. Maintaining regional and global stability is complicated for underground carbonate …