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\bibitem{Mitchell+Wheaton1999} Mitchell, P., \& Wheaton, A. (1999). From environmental burden to natural resource; new reagents for cost-effective treatment of, and metal recovery from, acid rock drainage. In D. E. Goldsack, N. Belzile, P. Yearwood, \& G. J. Hall (Eds.), \textit{Sudbury {\textquoteright}99; Mining and the environment II; Conference proceedings}.

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