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You searched for: Topical Subjects Mine roof bolting. Remove constraint Topical Subjects: Mine roof bolting. Topical Subjects Coal Mines and Mining--Miners at Work. Remove constraint Topical Subjects: Coal Mines and Mining--Miners at Work.
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Two miners work with a Joy roof bolt drill at Jamison No. 9.
Three miners putting bolts in the roof at Bishop Mine. Jacks used to hold the roof up while this process was being done.
Two miners put bolts in to the mine rood at Jamison No. 9.
Two miners work on putting in roof bolts in the Pittsburgh Seam. Timber jack used to hold the roof while bolting.
Miner putting bolts into the roof of a mine for support.
Miner putting bolts into the roof of a mine for support.
Miner putting bolts into the roof of a mine for support.