This final image in our set is obviously of the Hydro Drill in use. Simon Chapman has been able to assist with details: ”This was a drilling machine introduced to North Skelton Mine during the 1950s for a trial. Although useful it took too long to move about and put into place compared with a hand-held power drill so was not adopted.”
Image courtesy of Olive Bennett and many thanks to Simon Chapman for his assistance in identifying the machine and the mine in which it was trialled.
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