Updated Analysis of Longwall Pillar Stability (ALPS) computer program incorporates new Coal Mine Roof Rating (CMRR).

Bibliographic Details
Corporate Author:	United States. Bureau of Mines
Format:	Government Document Book
Language:	English
Published:	Washington, DC : Bureau of Mines, U.S. Dept. of the Interior, [1995]
Series:	Technology news ; no. 445.
Subjects:	Longwall mining > United States > Design > Computer programs.
Online Access:	https://purl.fdlp.gov/GPO/LPS91711

Available Online