Tharisa TSF 3 WRD Ext 1

OMI Solutions (Pty) Limited (OMI) was appointed by Tharisa Minerals (Pty) Ltd (Tharisa) to undertake the Environmental Authorisation (EA) Process for the proposed extension of the Tharisa Mine Waste Rock Dump (WRD) at Tailings Storage Facility (TSF) 3 (hereafter referred to as “proposed TSF 3 WRD Extension 1”).

Tharisa has an opencast Chrome and Platinum Group Metals (PGMs) mining operation located on Farms K/Kraal 342 JQ, Rooikoppies 297 JQ and Elandsdrift 467 JQ, south of Marikana in the North West Province. Tharisa has been in operation since November 2009 having been granted an initial Mining Right (MR) 49/2009 effective 19 September 2008, issued on 13 August 2009 by the then Department of Minerals and Energy (DME)1. Tharisa subsequently applied for an amendment of the MR with Reference Number: NW/30/5/1/2/2/358 MR, stamped 28 July 2011 however registered in 2016. Current approvals allow for a Life of Mine (LoM) for the open pit mining of 17 years. The planned future underground mining may increase the LoM to approximately 40 years.

As part of its ongoing mine planning, Tharisa has identified the need for an additional mine residue stockpile for waste rock, which consists of a WRD extension to West WRD 1 at TSF 3. The WRD will be able to store 4.78 Mm3 of waste from the West and East open pit area. The final height of the WRD will be 70 m with an estimated total footprint of approximately 22.7 ha. The WRD will have associated toe drainage, access roads and stormwater diversions. OMI has been appointed as the independent Environmental Assessment Practitioner (EAP) to undertake the Scoping and Environmental Impact Assessment (EIA) process which is aimed at critically evaluating the potential environmental and social impacts of the proposed project.

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