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Additions, Removals and Changes in Permissible List of Explosives from January 1, 1925 to July 31, 1926

Published Year

• 1920-1929 (1)

Subject

• Coal mines and mining (1) *
• Coal mines and mining--Safety measures (1)
• Mine explosions (1)
• Mine explosions--Safety measures (1) *

Author

• Perrott, G. St. J. (1)

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