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Environmental Impact of Large-Scale Mining in Papua New Guinea: Mining Residue Disposal by the Ok Tedi Copper-Gold Mine

dc.contributorScience Divisionen_US
dc.contributor.authorUnited Nations Environment Programmeen_US
dc.contributor.otherHettler, Jörgen_US
dc.contributor.otherLehmann, Bernden_US
dc.coverage.spatialPapua New Guineaen_US
dc.date.accessioned2019-07-24T07:22:07Z
dc.date.available2019-07-24T07:22:07Z
dc.date.issued1995
dc.identifier.isbn3895820199en_US
dc.identifier.urihttp://hdl.handle.net/20.500.11822/28885
dc.descriptionThe Ok Tedi copper-gold mine, located in the eastern part of the central mountain range of New Guinea, discharges daily approximately 80,000 tons of ore processing residues and a similar volume of waste rock and overburden into the headwaters of the Ok Tedi River. The Mount Fubilan orebody, which is the source of heavy metal-rich sediments de-posited along the Ok Tedi and on the Fly River floodplain, contains a suite of base metals, of which copper is of pri-mary environmental concern. The Ok Tedi flows into the Fly River 200 km downstream of the discharge point, where the mining wastes carried as suspended load are diluted. In the present study, the deposition of mine-derived sediments in the lower part of the Middle Fly River floodplain, and the hydrochemistry and potential mobilization of trace metals, particularly copper, in the alluvial plain was investigated. To this end, a total of 156 sediment cores and sur-face sediment samples and 117 water samples from the upper Ok Tedi and the Middle and Lower Fly River floodplain were taken. The suspended matter content in Middle Fly River water today is about 5-10 times higher than the natural background of about 60 mg/l.en_US
dc.formatTexten_US
dc.languageEnglishen_US
dc.rightsPublicen_US
dc.subjectCLIMATE CHANGEen_US
dc.subjectCOPPER MINESen_US
dc.subjectENVIRONMENTAL IMPACT ASSESSMENTen_US
dc.subjectENVIRONMENTAL MONITORINGen_US
dc.subjectFLOODPLAINSen_US
dc.subjectFRESHWATER BIOLOGYen_US
dc.subjectGEOLOGYen_US
dc.subjectGEOMORPHOLOGYen_US
dc.subjectGOLD MINESen_US
dc.subjectMINING INDUSTRYen_US
dc.subjectSEDIMENTATIONen_US
dc.subjectWATER POLLUTIONen_US
dc.titleEnvironmental Impact of Large-Scale Mining in Papua New Guinea: Mining Residue Disposal by the Ok Tedi Copper-Gold Mineen_US
dc.typeReports and Booksen_US
wd.identifier.sdgSDG 15 - Life on Landen_US
wd.topicsClimate changeen_US
wd.topicsEnvironment under reviewen_US


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