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Characterizing Tailings Impoundment at the Closed Hammaslahti Cu-Zn Mine, Finland Normal access

Authors: H. Vanhala, M.-L. Räisänen, T. Huotari, T. Valjus, J. Lehtimäki and I. Suppala
Event name: Near Surface 2004 - 10th EAGE European Meeting of Environmental and Engineering Geophysics
Session: Pollution Detection and Remediation Monitoring 2
Publication date: 06 September 2004
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 3.51Mb )
Price: € 20

B035 CHARACTERIZING TAILINGS IMPOUNDMENT AT THE CLOSED HAMMASLAHTI CU-ZN MINE FINLAND Summary 1 *H.VANHALA 1 M-L.RÄISÄNEN 2 T.HUOTARI 1 T.VALJUS 1 J. LEHTIMÄKI 1 and I. SUPPALA 1 1 Geological Survey of Finland (GTK) Betonimiehenkuja 4 FIN-02150 Espoo Finland Acid mine drainage (AMD) results when sulphide bearing tailings sand is exposed to air and water. Oxidation of sulphide minerals and release of acid and dissolved metals in tailings impoundments can last for tens to hundreds of years. Rehabilitation risk analysis and risk assessment of the old tailings impoundments require detailed information on the structure mineralogy and chemistry as well as

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