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Filter-paper method for obtaining dust-concentration results comparable to impinger results

Midget microprojector for dust determinations

Suggested methods for installing dust-allaying equipment in bituminous-coal mines

Size of smallest dust particles revealed by various microscopic systems

Dust control in mining, tunneling, and quarrying in the United States

Full-shift dust exposure in some bituminous-coal mines

Published Year

• 1940-1949 (4)
• 1950-1959 (2)

Subject

• Mines and mineral resources--Dust control--United States (6) *
• Quarries and quarrying--Dust control--United States (1)
• Tunneling--Dust control--United States (1)

Author

• Brown, Carlton E. (3)
• Owings, C. W. (3)
• Feicht, Florence L. (1)
• Harmon, John P. (1)

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