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The sand and gravel safety contest of 1929

Holmes Safety certificate presentation

Sand-and-gravel safety contest of 1930

Sand-and-gravel safety contest of 1931

Hazards from chlorates and perchlorates in mixtures with reducing materials

Published Year

• 1930-1939 (4)
• 1940-1949 (1)

Subject

• Industrial safety (5) *
• Sand and gravel industry--Accidents (3)
• Sand and gravel mines and mining--Accidents (3)
• Chlorine compounds (1)
• Safety education (1)

Author

• Adams, William W. (3)
• Kabik, Irving. (1)
• Turner, Scott, (1)

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