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Shaft Bottom

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Shaft Bottom 

a complex of underground mine workings excavated near a mine shaft. The shaft bottom consists of extensive main arteries that provide a transport link between the shafts and the main roadways and airways of the mine, and chambers used for various production purposes. The shaft bottom workings are used for receiving and processing loads entering the airway or haulage levels from the mine or from the surface. They are also used for the movement of personnel, the ventilation of mine workings, and the conveyance of loads and miners to the working faces. Shaft bottoms may be circular, looped, or of the shuttle type, depending on how they abut on the main roadways and on how the transport system is arranged.

REFERENCE

Al’bom okolostvol’nykh dvorov i stvolov shakht. Moscow, 1966.


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This is as a result of: * The planned closure of Harmony 2 shaft; * The planned closure of Merriespruit 3 shaft; * The temporary cessation of operations at Joel North shaft to allow for the completion of shaft bottom spillage infrastructure which resulted in 43 production days lost; * The tragic accident at Phakisa at the end of June 2010, which resulted in the closure of that shaft for 13 days.
The horse-keeper, Ned, told me to lead him to the shaft bottom.
The majority of our reserves in the Sudbury Basin are below the current infrastructure and at depths where there will be significant costs and operational challenges to mine," he said, adding that as they mine further from the shaft bottom, mining costs will increase approximately two to five per cent annually.
 
 
 
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