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The value of oxygen breathing apparatus to the mining industry

Platinum assays and platinum promotions

Some runaway car trips on inclines at coal mines

Saving life by barricading in mines and tunnels at times of disaster

Laboratories that make assays, analyses and tests on ores, minerals, and other substances

Laboratories that make fire assays, analyses and tests on ores, minerals, and other inorganic substances

Cutting and polishing stones

Published Year

• 1920-1929 (2)
• 1930-1939 (4)
• 1940-1949 (1)

Subject

• Accidents--Prevention--United States (1)
• Assaying (1)
• Blast effect--Testing (1)
• Breathing apparatus (1)
• Building, Bombproof--Testing (1)
• Mine rescue work (1)
• Mine rescue work--Equipment and supplies (1)
• Mine safety (1)
• Mine safety--Equipment and supplies (1)
• Platinum ores (1)
• Platinum--Assaying (1)
• Respirators (Medical equipment) (1)

Author

• Bernewitz, Max Wilhelm von, (7) *
• Davis, Charles Wesley, (2)
• Davis, C. W. (1)
• Denny, E. H. (1)
• Forbes, John Joseph Vincent. (1)
• Harrington, Daniel. (1)
• Hess, Frank Lee, (1)
• Lind, Samuel C. (1)

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