1. Tsumeb Smelter and Environmental management
Prepared For:
Chamber of Environment Workshop
28-30 June 2017

2. Krumovgrad Gold Project
DPM OVERVIEW
GLOBAL PORTFOLIO OF ASSETS
Unique Assets With Commodity and Geographic Diversity
Sabina
Canada
11%
Chelopech Mine
Bulgaria
100%
Avala
Serbia
100%
Krumovgrad Gold Project
Bulgaria
100%
Tsumeb Smelter
Namibia
100%
Operating assets
Development asset
Exploration assets
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3. DPMT OVERVIEW Status Upon Acquisition
DPM Ownership
100%
Location
Namibia
Acquisition March 2010
$50M
Primary Technology / Product
Ausmelt
Products
Blister copper, H2SO4
Emissions, dust-capture upgrades
$110M
2016 concentrate throughput t
Sulphuric acid capture plant (Q4 2015)
$243M
Holding furnace (2017)
~$50M
Expanded smelter capacity
370 ktpy
Built in Commissioned 1963.
Designed to treat complex ores from Tsumeb Mine containing high levels of copper, lead, zinc, arsenic and cadmium.
Environmental and health challenges during ‘80s and ‘90s; Pb, As and SO₂ emissions above international standards for years.
New furnace (Ausmelt) built and commissioned in to treat Lead.
Namibia’s copper mines closed in 2008.
Ausmelt re-commissioned 2008 for Copper treatment.
DPM purchased the Smelter from Weatherly Mining in March 2010.
Production capacity increased from 147,000 t concentrate in to a current capacity of 240,000 tpa.
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4. Copper making (converting)
DPMT OVERVIEW (CONT...)
Copper Smelting Overview
Offgas cleaning
HWF
Sulphuric acid plant
H2SO4
SO2
Dust
Offgas
Feed preparation
Concentrate
Feed
23% Cu
Reverts
Fluxes
Fuels
Cu Dusts
Matte
58% Cu
Copper
98.5% Cu
Slag
5% Cu
Copper making (converting)
Slag milling
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5. WORK OF ENVIRONMENTAL DEPARTMENT
Environmental management –
Air Quality
Five Air Quality Stations, US EPA certified
Dust (PM10, 2.5), SO2 , Arsenic (As2O3), Pb, Cd, Pb and Fallout Dust
Groundwater
Surface water
Hazardous Waste Disposal Facility (HWDF)
EMP implementation
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6. WORK OF ENVIRONMENTAL DEPARTMENT (CONT…)
Projects/studies –
Contaminated Land Assessment (LCA)
Biodiversity & ecological indicators
Small mammal sampling as indicators of environmental health
Phytoremediation
Nursery
Surface Water infrastructure upgrade
Groundwater contamination control and treatment options (tender awarded).
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7. WORK OF ENVIRONMENTAL DEPARTMENT (CONT…)
Stakeholders Engagement and Feedback –
Collaboration with MWAF
Inter-Ministerial Technical Committee
Information Display
Assurance –
Engineering designs
Licensing and Compliance
Independent Auditing
Certified monitoring equipment
Use of accredited laboratories
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8. CHALLENGES Legacy soil contamination (decades of mining and smelting)
Groundwater water quality
Surface water infrastructure
Disposal of Hazardous Waste
Fugitive emissions
Managing external perceptions, e.g. NGOs, Community etc.
Absence of clear national legislations (or standards)
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9. SUCCESSES A number of ongoing projects and studies (body of knowledge)
Sulphuric Acid Plant ( positive SO2 trends)
Plant infrastructure upgrades
Alien Species control programme (Tree Award-2016)
Community outreach (Arbor day involvement with schools, Old Age homes etc)
Enhanced capacity within environmental team.
Good relations with authorities
Technical Committee-Close out audit in progress
Internal systems and processes in place for environmental
monitoring
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10. 08/11/2018

11. WHAT MORE COULD BE DONE?
Explore further appropriate Engineering controls to reduce releases into the environment
Arsenic Vitrification Pilot Plant
Complete current environmental studies / projects
Implement key recommendations from the number of studies that have been conducted
Improve / Strengthen the internal and external audit system
Continue and Expanding monitoring programme
Integrated Waste Management Plan
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12. PRPOSED ASPECTS INTO ENV. SECTION OF STRATEGIC PLAN
Platform for MDs and Executives to learn of impacts and solutions to environmental problems in the sector
Create a platform to drive environmental stewardship and awareness in the mining sector
External Advocacy
To define the support the forum can render in the process of national legislation e.g. capacity building in GRN
Influence Policy
Allow for inter-mine visits and learnings
Should not be a professional organisation (not to be used as tool for professional accreditation)
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13. Thank you 13
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