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At the same time the first mechanical rock drills were boring holes that miners
had always bored by muscle. A surface engine sent compressed air down pipes
to the heavy rock drill and pistons in the cylinders of the drill thrust to and fro, ...
However, it is clear that Mount Morgan's shrewd effort to sustain the shares saved
D'Arcy in his crisis, enabled him to drill for another six months or more, and
thereby gave Britain one of its richest, most strategic assets. For D'Arcy spent ...
The dust drifting from, the rock drills underground carried a new hazard, more
dangerous than physical accidents because it was invisible. The machine miners'
main job was to drill holes into the rock and fill the holes with explosives, and the
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LibraryThing ReviewUser Review - nandadevi - LibraryThing
The history of mining is central to Australian history, from the gold rushes of the 1860's which brought hundreds of thousand of immigrants, to the mountain ranges of iron ore and immense natural gas ... Read full review