From Goggle
A steam drill is powered by a remote boiler while a length of steel hammered away at the rock face. It took the ingenuity of an American inventor named Simon Ingersoll in 1871 to come up with a device that rotated as well, effectively creating the first hammer drill.
Whilst they dont really appear to be working a "rock face" I dont know enough, (actually SFA) about this to comment further

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