Showing
1 - 3
of 3
, query time: 0.01s
Format:
Image
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.
2) Machine Shop
Format:
Image
Bob Enzenroth in the machine shop at the Gilman Mine repairing and overhauling a jackhammer.
Format:
Image
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.