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      <marc:subfield code="a">Environmental geoscience investigations surrounding the former Aldermac mine, Abitibi, Quebec : </marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 20).</marc:subfield>
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      <marc:subfield code="a">"Geoscience investigations are fundamental for environmental risk assessment of metal mining. This Geological Survey of Canada Open File presents regional geochemical surveys of surface water and sediments from lakes and streams collected during 2011-13. The data form the basis to identify environmental metal contamination in the vicinity of the former Aldermac mine site (Cu, Zn, Au and Ag) in Abitibi, Quebec, in addition to tracking potential recovery of aquatic systems"--Summary, page 1.</marc:subfield>
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