Drilling & boring machinery
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Bob Enzenroth repairing and overhauling a jackhammer. All rock drills not working properly were sent to the machine shop to be cleaned, repaired and returned to the mine for service.
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Emmet Flaherty preparing to pre-heat two blank pieces of hollow drill steel. In the background is an automatic oil-fired forge which will bring these blanks to an exact temperature for forging. From the hollow drill blanks, finished pieces of lugged steel are formed for use in rock drills.
3) Machine Shop
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Bob Enzenroth in the machine shop at the Gilman Mine repairing and overhauling a jackhammer.
