Chamber Environmental Workshop June 2017 Uwe Rentel – SHEQ Manager

QKR Namibia Navachab Gold Mine Owned by QKR Corporate Limited the majority shareholder and Epangelo Mining Company (Pty) Ltd the minority shareholder 1984 gold were discovered after exploration drilling 1988 Construction started and December 1989 first gold bar was poured 2014 QKR Corporation purchased Navachab Gold Mine from AngloGold Ashanti plc. LOM until 2028

Scope of work: Environmental Department Monitoring Dust Groundwater Drinking water Waste management Hazardous – hydrocarbon waste, medical waste, used tyres, neon tubes, redundant chemicals Non-hazardous – domestic waste, scrap materials, redundant items Rehabilitation Maintaining on-site nursery Rehabilitation planting activities

Scope of work: Environmental Department Assessments Conduct internal Environmental Audits & Risk Assessments Coordinate External Environmental Studies Set mine-wide departmental environmental goals, objectives & targets and track performance Chemicals management Oversee safe handling & storage Maintain chemicals master file

Scope of work: Environmental Department Auditing Audit sections on Environmental issues Write corrective action requests and follow up on close-out Community activities – town cleaning & trimming of trees on sidewalks Drinking water purification Mine Closure Plan Annual measurements & calculations of the Mine Closure Costs

The Challenges One of the biggest challenges for Environmental Team is waste management. Non-Hazardous waste streams No recycling facilities in Karibib Plastic waste sent to Okahandja Scrap metal and vehicle batteries sold to dealers Redundant items sold to employees Hazardous waste streams Medical waste and hydrocarbon waste taken to Walvis Bay. Used Oil sold to dealers Used Tyres? Transformer oils?

The Successes Continuous rehabilitation during LOM Tailing Storage Facility 1 closed and rehabilitated TSF1 was commissioned in 1989 Footprint 302 342m2 Capped area 164 430m2 Re-hab Costs N$8 800 000 Last year of use 2003 Duration of rehabilitation was three years

The Successes Busy capping the top of the slime with about 30cm layer of weathered shist

The Successes Aerial pictures from TSF 2004 & 2016

The Successes Revegetated TSF after a good rainy season

The Successes Rehabilitated Waste Rock Dump Rehabilitated WRD area is 9.6 ha Sloped at an angel of 18° or less Cover the WRD wall with weathered schist Re-vegetated by planting indigenous trees, shrubs and aloes Grass re-vegetation occurred naturally through good rains 2000 trees & aloes were planted during October 2005 & March 2006

The Successes Rehabbed Waste Rock Dump No rehab done Rehab done

The Successes Re-vegetated top of the WRD

The Successes Grid A Closure Grid A mineralization discovered November 1985 Mining commenced January 2006 Footprint of pit 8 ha Footprint of WRD 27.5 ha Re-hab. costs N$1 900 000 Last year of use 2010 Re-hab. Duration one year

The Successes Grid A before rehabilitation

The Successes Grid A dozing, capping and tree planting

The Successes Grid A WRD after re-hab. & wildlife grazing on the WRD

The Successes Introducing the Filter Plant versus TSF Water recovery Filter Plant up to 75% Water usage from NAMWATER the same but we could justify to introduce the DMS plant Treating 600t/h ore instead of 180t/h

What more could be done Rehabilitation of hydrocarbon contaminated soil Bioremediation of greases and transformer oils Dust suppression mine wide (haul roads, crusher etc.)

Suggestions for COM Looking into the waste management Hazardous waste streams Medical waste taken to Walvis Bay. Rather have an incinerator in the central region as well? Medical waste and hydrocarbon waste taken to Walvis Bay. Hydrocarbon waste taken to Walvis Bay. Is this the best possible practice? Is disposal on site according to best practice guidelines not less polluting taken into account that the hazardous waste site is within close proximity to sea water? Used Tyres Can mines put heads together and purchase an industrial tyre shredder – shredded material can be used for road building? Transformer oils – Currently no safe disposal method and just collected and stored on site. Options?

Questions ?