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Publications by [Wakefield T. E.]
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Over several decades in Southern Africa the advance rates when sinking vertical shafts have declined significantly. The upside has been a substantial improvement in shaft bottom conditions and a commensurately improved safety performance, with an increasing ...
Filed under:
Tunnel Engineering -
Shafts
Reference:
The Southern African Institute of Mining and Metallurgy Shaft Sinking and Mining Contractors Conference 2009