TY - GEN AU - Bartels,John R. AU - Mayercheck,William D. AU - Hummer,Jon A. TI - Flywheel-powered shuttle car T2 - Report of investigations PY - 1990/// CY - Washington, D.C. PB - U.S. Dept. of the Interior, Bureau of Mines KW - Shuttle cars (Mine haulage) KW - Motors KW - Flywheels ER -