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202041 · Shaft sinking prior to 1600: Ancient times. (This article was originally published in CIM Magazine’s August 2007 issue as part of the “Evolution of Shaft Sinking” series.) The sinking of mine shafts has been going on for thousands of years. The Egyptians mined gold as long as 4,000 years ago, and it is thought that the Persians, Greeks ...
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20231026 · Alamos prepped for Dubreuilville mine shaft sinking. The hoist is complete, the headframe is near completion, and the sinking of a new shaft at the Island Gold Mine, outside Dubreuilville, begins at year’s end. In delivering its third-quarter results, Alamos Gold updated progress on the third phase of expansion of the high-grade …
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2017312 · Opal Mining Methods & Equipment The simplest form of mining is sinking a shaft with a pick and shovel. When I say simplest I mean the cheapest way to get started, simple does not always mean the easiest. This method involves hard, …
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201519 · Shaft sinkers from the Republic of South Africa generally claim to hold the shaft sinking record for their sinking project at the Buffelsfontein mine in 1962; however, as can be seen from the list above, both the Russians and the Ukrainians were faster.
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2017328 · A striking example of economy by slow-speed sinking is afforded by the experience at the Burra-Burra mine in Tennessee, where the three-compartment McPherson shaft was sunk 6 feet 7 inches by 16 feet inside the timbers. By sinking at a leisurely rate averaging a little over 2 feet per day, a saving of $50 per foot was made as compared to ...
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Many mining companies, and many of the engineering companies that provide designs for mines, operate globally so ISO 19426 was developed in response to a desire for a unified global approach to the safe and robust design of structures for mine shafts. The characteristics of ore bodies, such as their depth and shape, vary in different areas so ...
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2023215 · Freezing shaft-sinking is a construction method to freeze the aquifer around the shaft into a closed cylindrical frozen wall by artificial refrigeration method before the shaft is dug, so as to resist the ground pressure and isolate the connection between groundwater and the shaft and to excavate and build under the protection of the frozen ...
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2015220 · The Murray & Roberts Cementation Training Academy at Bentley Park in South Africa has adapted its conventional shaft sinking infrastructure to accommodate the latest shaft sinking methodology introduced to the South African mining industry from Cementation Canada. Tony Pretorius, risk manager at the Murray & Roberts Cementation …
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201628 · Global diamond company De Beers’ US$2 billion cash injection to transition Venetia from a surface operation to an underground mine is the company’s largest investment ever made in South Africa and a massive development undertaking which effectively secures its lifespan for another 20+ years. The project also celebrates world …
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