@article {38708,
	title = {Cardinal River Coals Pit 50-A-8 blast study. Supplemental Information to Application No. 931225 (50-A-8 Pit)},
	year = {1993},
	note = {Also cited as 50-A8},
	institution = {MREL Mining Resource Engineering Limited for Cardinal River Coals Ltd.},
	author = {Crosby, W. A.}
}
