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- W2885276875 abstract "Environmental expectations from the public have increased over the years. This has resulted in more demanding licence conditions for new mining operations. In addressing a ministerial condition to rehabilitate waste dumps to a condition that fits with the surrounding landforms, Newcrest’s Telfer Operations embarked on a research and development programme to landscape waste dumps into mesas, a dominant landform in the region. A series of trials were initiated on waste rock dumps to demonstrate that engineered mesas are potentially stable landforms and with the application of topsoil as a seed bank and growth medium can support vegetation. The experience from these trials was used in full-scale rehabilitation of waste dump WD13 at an abandoned mine pit. From November to December 2008, WD13 was reshaped into a mesa landform and covered with a topsoil waste rock mix. The 30 m face of the waste rock dump was pushed into an upper slope at 16° and the lower slope at 7° and competent waste rock was added to the crest as a perimeter bund and to give the appearance of a duricrust. The final landscape closely resembled mesa landforms in the region. Monitoring in October 2009, found the landform to be stable after exposure to several rain events, soil quality was unchanged and vegetation was establishing; Kapok Bush (Aerva javanica) an invasive weed, was the dominant emergent vegetation but many native species were also establishing. Spinifex was the dominant group of the native species." @default.
- W2885276875 created "2018-08-22" @default.
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- W2885276875 date "2010-01-01" @default.
- W2885276875 modified "2023-09-23" @default.
- W2885276875 title "Waste rock dump rehabilitation to a new level – Telfer WD13 constructed mesa landform" @default.
- W2885276875 doi "https://doi.org/10.36487/acg_rep/1008_10_mifsud" @default.
- W2885276875 hasPublicationYear "2010" @default.
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