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Results 31 - 33 of 33
9/1/1974 - Contract reportsMeasurements of the absolute value of electromagnetic noise and attenuation along a hoist rope were made in an operating Hard-Rock Mine, Lucky Friday Mine, located near Wallace, Idaho. The specific measured results are given in a number of spectral plot...
Major Disasters at Metal and Nonmetal Mines and Quarries in the United States (Excluding Coal Mines)4/1/1949 - Information CircularsA 1949 U.S. Bureau of Mines Information Circular describing major U.S. metal/nonmetal mining disasters.
1/1/1935 - NIOSH/USBM numbered publicationsIn the belief that the quickest and cheapest method of obtaining effective ventilation of metal mines with regard to air conditions that promote efficiency, health, and safety is through more general application of the engineering factors involved rathe...