@article {38058,
	title = {Preliminary evaluation of nitrogen from coal mining on the Eastern Slope Foothills of Alberta},
	year = {1991},
	institution = {R. L. \& L. Environmental Services Ltd. for Cardinal River Coals Ltd., Luscar Sterco (1977) Ltd., Manalta Coal Ltd., Obed Coals Ltd. and Smoky River Coal Ltd.}
}
