Blast casting at an Eastern strip mine

Rollins, R. R. ; Givens, R. W.

Organization: Society for Mining, Metallurgy & Exploration

Pages: 5

Publication Date: Jan 1, 1988

Abstract

Field data combined with theoretical derivations were used to design a surface mining operation using explosive casting. Calculated casting results varied from 44% to 65% depending on bench height. The field tests were performed at an Eastern, contour, coal stripping operation. Results from five experimental casting shots, using a shovel and trucks, are summarized and compared to conventional mining methods. The overburden material removed by casting ranged from 35% to 65%, with an average of 50%. Fragmentation was improved, and it was demonstrated that this procedure is economically attractive, with a resultant cost savings of $0.59/m3 or $5.93/t of clean coal.

Full Article Download:

(344 kb)