"Shuttle car operation. "; "West Virginia University. Mining Extension Service."; "Coal mines and mining--Safety measures.", "Mining machinery.", "Coal mines and mining--Equipment and supplies."; "West Virginia University. Mining Extension Service."; "1980"; "Serial issue. Issued as: West Virginia University. Mining Extension Service. Slide-tape text, no.203T. \"This is one of a series of printed texts which accompanies the slide tape programs on coal mining, developed by the Mining Extension Service of West Virginia University.\" "; ""; "P17063"; "pec"; "Coal mines and mining--Safety measures.", "Coal mines and mining--Equipment and supplies.", "Mining machinery."; "14256"; .