Images of investigations into health hazards and pollution complaints at various industrial plants throughout the state are included in this series. Records span numerous years for some facilities, such as a thirty-year run of data for the Lebanon Steel Foundry. Information includes: data on medical problems for individuals caused by hazardous working conditions (with names of the individuals given in a few instances), specifics on the types on machinery utilized at specific plants, employment statistics, survey records, inspection results and related laboratory reports, as well as descriptions of miscellaneous industrial processes.