References
- U.S. Department of Labor, Mine Safety and Health Administration . June 1992 . Review of the Program to Control Respirable Coal Mine Dust in the United States. Report of the Coal Mine Respirable Dust Task Group. U.S Washington, DC : Department of Labor .
- U.S. Bureau of Mines Contract 1432-H0329016 . 1992 . Development of Resonant Filter Membrane Respirable Coal Mine Dust Mass Monitor ,
- U.S. Bureau of Mines Contract 1432-H024001 . 1994 . Adaption of the Tapered-Element-Oscillating Microbalance as a Continuous Dust Monitor for Coal Mines ,