seriesNo,seriesEntityName,seriesTitle,seriesDateRange,seriesArrangement,seriesDescription,seriesTotRetentDesc,seriesPrimaryClassCode,seriesExtentDesc 23009,Inspector of Coal and Hydrocarbon Mines,Letter books,1896-1915.,Chronological by date.,"The coal mine inspector recorded most outgoing correspondence in letter books. This correspondence documents his activities\, which centered on safety inspections and accident investigations. In addition to correspondence\, the mine inspector used the same letter books to report mine inspections. Quarterly\, he inspected all mines employing six or more full time employees. He evaluated factors relating to the mine's safety\, including things like ventilation\, watering\, timbering\, scale accuracy and man trips (procedure for entering and exiting the mine)\, etc. In early letter books\, he calculated travel expenses and reported accidents.",,Public,0.70 cubic foot 6 microfilm reels