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Hidden mine shafts, often hidden beneath bushes, grasses, and other vegetation that has grown up around the mine entrance, or boarded over with timbers that deteriorated to the point they can no longer support weight. Unstable tunnels, roofs and passageways, which are prone to cave-ins.
Cave-ins, poor air quality, wet slippery surfaces, etc. are real dangers when entering a mine, but even the surrounding area can be dangerous.Older mines may have been covered with logs or wooden beams with loose rock and soil over the top. [1]
Mine shafts are vertical or near-vertical tunnels, which are "sunk" as a means of accessing an underground ore body, during the development of an underground mine.. The shape (in plan view), dimensions and depth of mine shafts vary greatly in response to the specific needs of the mine they are part of and the geology they are sunk through.
Mine reclamation is the process of modifying land that has been mined to restore it to an ecologically functional or economically usable state. Although the process of mine reclamation occurs once mining is complete, the planning of mine reclamation activities may occur prior to a mine being permitted or started. [1]
Cart from 16th century, found in Transylvania A dumper minecart used in the Basque Country, currently at the Minery Museum.. A minecart, mine cart, or mine car (or more rarely mine trolley or mine hutch) is a type of rolling stock found on a mine railway, used for transporting ore and materials procured in the process of traditional mining.
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In addition to operational mine rehabilitation activities, often termed 'progressive rehabilitation', abandoned mines are also restored. The financing for restoring abandoned mines is drawn from operating mines and public sources. The cost of reclaiming the abandoned mines in the US is estimated at $9.6bn.
Shaft No. 2 with the old hoist house, c1906 Quincy Mine No. 2 Hoist House, 2006 Quincy Mine No. 2 Hoist House, 1978. The Quincy Mining Company was first organized in 1846, [4] and incorporated two years later, to mine the then-recently discovered Portage Lake copper formations. [2]