ramp decline max depth ?

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wpgmoney

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ramp decline max depth ?

posted on Jun 07, 2010 05:47PM

Anyone know how deep SGR can go with the decline ramp in the 007 zone and beyond ?

google returned " The optimum “changeover” depth from ramp haulage to shaft hoisting is 350m (1,150 feet). Source: Northcote and Barnes" Source :

http://www.mcintoshengineering.com/HardRockMinersHandbook/HardRockMinersRulesofThumb/MineLayout/tabid/81/Default.aspx

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