BLASTING BY ELECTRICITY.
The North Consolidated Virginia mining company have of late been using electricity to discharge the blasts put into the bottom of the shaft. This has been attended with the very best results. By this process all the blasts have been discharged at once, and three times as much rock torn up as was loosened when the blasts were discharged in the usual ■way. The process is simple. The battery is placed in the drift above, and wire 3 descend to the bottom of the shaft. These wires are connected with tho explosives by smaller wires, and the circuit thus completed. A few turns of the battery sends the electric spark through the wire 3, exploding the detonators, which in turn set off the blasts and all at once. Superintendent Jackson reports the effects more than twice as great as when the blasts are discharged by the usual method. The company have sent below for a heavier battery, which will be up in a few days. — Virginia Enterprise.
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Bibliographic details
Otago Witness, Issue 1342, 18 August 1877, Page 4
Word Count
170BLASTING BY ELECTRICITY. Otago Witness, Issue 1342, 18 August 1877, Page 4
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