TY - BOOK T1 - The Three-dimensional structural analysis of double-entry and single-entry coal mines :final report / DA - [1976-1978] CY - El Segundo, CA : AU - Balachandra, M. B. CN - TN288 CN - TN288 PB - Agbabian Associates, PP - El Segundo, CA : PY - [1976-1978] N1 - June 1976, October 1978. N1 - Prepared for Bureau of Mines. ID - 32733 KW - Ground control (Mining) KW - Mining engineering KW - Coal mines and mining TI - The Three-dimensional structural analysis of double-entry and single-entry coal mines :final report / ER -