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Cooperative mining at the Keely Mine, Dugger, Indiana

Economies through roof bolting in an Indiana coal mine

Some factors affecting and suggested ways for improving coal-mine ventilation, with particular reference to mines in Illinois, Indiana, and Western Kentucky

Published Year

• 1920-1929 (1)
• 1950-1959 (2)

Subject

• Coal mines and mining--Indiana (3) *
• Coal mines and mining (1)
• Coal mines and mining--Illinois (1)
• Coal mines and mining--Kentucky (1)
• Mine roof bolting (1)
• Mine ventilation (1)
• Mines and mineral resources--Indiana (1)

Author

• Bourquin, J. J. (1)
• Herbert, C. A. (1)
• Kelly, L. W. (1)

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