This September, Las Vegas hosts MINExpo 2008, one of the world’s largest mining exhibitions that is held every four years. MINING.com Magazine reviews everything you need to know before you attend. read more »
Global demand for coal has shown some signs of slack, leaving investors to wonder what's next for U.S. producers who've seen prices at times triple over the past year.read more »
Mining companies will find it difficult to raise capital in the current environment, especially if a trend emerges for miners to spin-off assets, says Melbourne-based private equity fund African Lion.read more »
The resources boom has pushed Africa into second place as the destination with the second highest growth for Australian trade and investment behind Asia, a top diplomat says. read more »
Mining officials in the United States asked prosecutors Wednesday to decide whether criminal charges are warranted in the deaths of nine people in last year's collapse of the Crandall Canyon mine in Utah. read more »
British mining company Lonmin PLC kept up its public defence against a hostile 5 billion pound takeover approach from Anglo-Swiss miner Xstrata PLC on Tuesday.read more »
A combination of low prices, weddings, Eid and Diwali are likely to give the physical market substantial support throughout much of September - the question is whether purchasers are buying more, or earlier, or both?
BHP Billiton began restarting its Australian iron ore mines after shutting down operations after two miners died in separate incidents, but the Yandi mine remains shut as investigations continue.
Mining Field: Shaft SinkingArea: Circular Shaft (Rule#165)
For a rope guide system in a shaft being sunk to a moderate depth, the minimum clearance between a conveyance (bucket and crosshead) and a fixed obstruction is 12 inches and to another bucket is 24 inches. At the shaft collar, the clearance to a fixed obstruction may be reduced to 6 inches due to slowdown, or less with the use of fairleads or skid plates. In a deep shaft, 18-24 inches is required to clear a fixed obstruction and 30-36 inches is required between buckets, depending on the actual hoisting speed. These clearances assume that the shaft stage hangs free and the guide ropes are fully tensioned when hoisting buckets.
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