anglysky_dlya_gornykh_inzhenerov
.pdfUnit 8 |
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ing to fabricators nearly always takes place in separate plants that refine the products of several mines.
As is known, modern methods of processing are dense medium separation, jigging and froth floatation. Operations prior to coa l preparation include: blending, screening, crushing, dewatering and others. The aim is to get clean coal for metallurgical plants, etc.
Since mines tend to be located far away from developed areas, infrastructure is often a substantial proportion of capital cost. It is frequently necessary to provide sources of power and water, as well as highways, railroads and port facilities. In addition the mining company may be responsible for constructing living quarters for workers and their families and for providing education and other public services required by the mining community.
PHASE I Before |
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PHASE II |
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PHASE III |
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Mining |
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Mining |
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After Mining |
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Prospecting: |
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Ext racting: |
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Processing |
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Finding |
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Surface |
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To further |
Proving |
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Underground |
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Ore to |
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processing |
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Planning |
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Dredging |
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processing |
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Opening and |
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consumer |
Developing |
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products |
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Drilling Sampling |
Breaking |
Size reduction |
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Shaft Sinking or |
Loading |
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Screening |
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Tunnelling |
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Transporting |
Classification |
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Stripping |
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Unloading |
Dewatering |
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Underground or |
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Thermal Drying |
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Surface Construction |
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Leaching |
SCOPE OF MINING ACTIVITIES
На обсу жд ение выно сятс я следу ющие во про сы:
1.Using the scheme above speak about the main divisions of mining activities. What are they?
2.What definition can you give to mining in general?
3.You are a geologist. What can you say about the main objec tives of 1) exploration; 2) evaluation?
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