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Screenshot of SRKNewsletter No.44 (2011)

Tailings, Heap Leach and Waste Focus

SRK News #44

Anglo Platinum, Mogalakwena

Johan Boshoff

The Mogalakwena platinum mine is located approximately 35km to the north west of the town of Mokopane in the Limpopo Province of South Africa and is the only open cast platinum mine within the Anglo American Group.

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Challenges Of Tailings Disposal In Russia And CIS Countries

Jamie Spiers, Kris Czajewski

SRK has a strong track record in assisting clients in Russia and other CIS countries with developing Bankable Feasibility Studies and auditing existing and prospective tailings disposal facilities.

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Esperanza Thickened Tailings Project

Dave Luppnow

SRK has recently concluded the detail engineering of the Minera Esperanza tailings storage facility and is currently providing technical supervision for construction.

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Seepage Control At The Colomac Tailing Containment Area

The Colomac gold mine, located at 64° latitude in northern Canada, operated intermittently from 1989 to 1997.

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SRK Leads Investigation Of Very Coarse Granular Materials

Sandra Linero

The challenge faced by some mines in the Andean mountain range is the lack of available space for waste dumps, given the steepness of the typical mountainous topography.

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Constructing Water Balance Models Using GoldSim™

Juanita Martin

SRK has recently incorporated the GoldSim™ tool as part of the range of services that the tailings and heap leach group offer to our clients.

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Solutions to Reduce Infiltration

Alvaro Huerta

SRK has successfully conducted a feasibility study of medium and long term solutions to infiltration and water management problems for one tailing storage facility (TSF) located in the central valley of Chile.

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Penstock Decant System For Large Tailings Dams

Danie Venter

SRK Johannesburg has again become involved in the design of ring dyke tailings dams to accommodate a fairly large deposition rate.

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Numerical Modelling Of Mineral Sands

Rob McNeill

SRK used numerical modelling on a 3D MS Excel platform to solve challenges involving the deposit of a heavy minerals thickened paste on natural valley slopes, to determine maximum coverage and hang-up.

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Giroux Wash Tailings Impoundment

Dave Bentel, John Cooper

The Giroux Wash tailings impoundment at the Robinson Mine in Nevada receives a nominal 42,000 tons per day of milled, processed sulfide flotation tailings.

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Long Term Stockpiling of Copper Ore at Batu Hijau Mine

Andrew Garvie, Claire Linklater

PT Newmont Nusa Tenggara plans to stockpile approximately 500Mt of copper ore for up to 20 years at the Batu Hijau mine on Sumbawa Island, Indonesia. Cu recovery from unoxidised ore is about 85%.

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Process Pond Modifications To Mitigate Groundwater Elevation Increase

Daniel Neuffer

When rising groundwater elevations posed a potential risk to the integrity of existing geomembrane pond liners, Barrick Cortez, Inc. (Barrick) retained SRK for engineering modifications to the process ponds.

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Tailings Storage Facility Expansion

Caroline Holmes, Dave Luppnow

SRK was commissioned by Focus Minerals Limited to provide professional services associated with their Three Mile Hill in-pit tailings storage facility (TSF) in Western Australia.

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Solid Waste Landfills

Breese Burnley, Evan Nikirk

Since the late 1990s, SRK Reno has been providing solid waste landfill design and permitting services for small municipalities in Nevada, Utah, and California.

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Experience Gained From Tailings Dam Audits

Adriaan Meintjes

Recently SRK was requested to review 15 old tailings dams in Zambia and evaluate the work required to close them.

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Synthetic Liner Pipe Penetration

Breese Burnley, Dave Bentel

SRK Reno has designed a “boot” configuration that can be used for pipeline penetrations through a synthetic HDPE geomembrane pond liner; it has been approved via regulatory permitting processes for construction.

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New Tailings Impoundment Feasibility Design In Senegal

Maritz Rykaart

SRK completed the feasibility design of a tailings management facility (TMF) for the Oromin Joint Venture Group at the Sabodala Project in Senegal in 2010.

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Benefits Of Designing For Closure In Nevada

Breese Burnley, David Bentel

Before a tailings facility can be constructed in Nevada, detailed engineering design must be approved at state level, including plans describing process fluid operating protocols and methods and costs for disposing of process fluids and stabilising process materials.

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