Between 1807 and 1810, Lepage invented a new way to fire portative firearms, by using the mercury fulminate priming medium to be fired by the blow of a percussion hammer.
2.
Doheny brought in a sharpened eucalyptus log and used it as an improvised percussion hammer to deepen the well, and shortly afterwards they punctured an oil reservoir, and began producing about seven barrels a day.
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