Colaizzi, G. J. et al.

Pumped-slurry backfilling of abandoned coal mine workings for subsidence control at Rock Springs, Wyo.

Washington: Office of Surface Mining, 1981. CD-ROM. Very Good. Item #11709

Soft thin plastic case with no covers. ; USBM Information Circular 8846; 5.60 X 4.80 X 0.40 inches; 108 pages.

Price: $12.00