@article {31407,
	title = {Feasibility study of underground mining of oil sand. Presented at the AOSTRA Seminar on Underground Excavation in oil sands, Edmonton, May 19, 1978, edited by M. B. Dusseault},
	volume = {Paper No. 5},
	year = {1978},
	institution = {Alberta Oil Sands Technology and Research Authority},
	author = {Harris, M. C. and Sobkowicz, J. C.}
}
