why current from lighting or power circuit shall not be used for firing shots in u/g coal mine?



why current from lighting or power circuit shall not be used for firing shots in u/g coal mine?..

Answer / shivam dhiman

in case high amount of coal , it is not possible...but in small amount case it is possible......sparking due to current depend upon voltage...but on other side in petrol engine ,there is spark ignition by electric circuit....

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