1 / 21

Chamber Environmental Workshop

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

karendnelson
Download Presentation

Chamber Environmental Workshop

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chamber Environmental Workshop June 2017 Uwe Rentel – SHEQ Manager

  2. 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

  3. 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

  4. 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

  5. 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 • Scope of work: Environmental Department

  6. 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 Challenges

  7. 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 • Continuous rehabilitation during LOM

  8. The Successes • Busy capping the top of theslime with about 30cm layer of weathered shist

  9. The Successes • Aerial pictures from TSF 2004 & 2016

  10. Revegetated TSF after a good rainy season • The Successes

  11. Rehabilitated Waste Rock Dump • The Successes • 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

  12. Rehabbed Waste Rock Dump No rehab done Rehabdone • The Successes

  13. Re-vegetated top of the WRD • The Successes

  14. 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

  15. Grid A before rehabilitation • The Successes

  16. Grid A dozing, capping and tree planting • The Successes

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

  18. Introducing the Filter Plant versus TSF • Water recovery • TSF 35%-45% • 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 • The Successes

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

  20. 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? • Suggestions for COM

  21. Questions ?

More Related