Department of Environmental Resources, Bureau of Occupational Health, Coal Industry Environmental Studies dated circa 1943-1964: Allegheny, Bedford, Carbon, Cambria, Centre, Clearfield, Elk, Fayette, Indiana, Jefferson, Lackawanna, Luzerne, Mercer, Northumberland, Schuylkill, Somerset, and Sullivan Counties. The punch cards and index with breaker names are at the end of this roll., This Digital Object is provided in a collection that is included in POWER LIBRARY: Pennsylvania Photos and Documents, which is funded by the Office of Commonwealth Libraries of Pennsylvania/Pennsylvania Department of Education., Arranged alphabetically by county or breaker. Results of dust surveys, taken at various coal mines across Pennsylvania, are included in this series. Included are survey reports, miscellaneous information concerning the mines surveyed, and associated correspondence. Also present are occasional listings of employment data, as well as details relative to mining techniques employed at mines surveyed. Breaker information punch cards are also present, providing information on the companies operating the breakers, production and operation data, as well as information describing medical services provided at each facility.
