A guide to leading practice sustainable development in mining

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Sustainable development Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Tailings A combination of the fine-grained solid material remaining after the recoverable metals and minerals have been extracted from crushed and ground mined ore, and any process water remaining. Tailings beach The delta that forms on discharge of a flowable slurry. Tailings containment Usually constructed initially as an earthen starter embankment, with wall raises constructed using borrow material and/or tailings. Construction may be downstream using borrow material, or centreline or upstream using borrow material or predominantly tailings. Tailings management Managing tailings over their life-cycle, including their production, transport, placement, and storage, and the closure and rehabilitation of the tailings storage facility. Tailings pumping and pipeline system Designed to deliver tailings slurry from the mineral processing plant to the tailings storage facility. Tailings slurry Tailings solids embedded in process water that are produced in the processing plant at a low density, which beach at a flat slope, segregate down the beach, and produce considerable supernatant water. Tailings storage facility An area used to contain tailings; its prime function is to achieve solids sedimentation, consolidation and desiccation, and to facilitate water recovery or removal without impacting the environment. It refers to the overall facility, and may include one or more tailings storages. Temporary closure (care and maintenance) Phase following temporary cessation of operations when infrastructure remains intact and the site continues to be managed. Tenement Some form of legal instrument providing access to land for the purposes of mining. Thickened tailings Tailings thickened to a high density, which beach at a steeper slope and segregate less than tailings slurry, producing far less supernatant water. A GUIDE TO LEADING PRACTICE SUSTAINABLE DEVELOPMENT IN MINING 197
Thickener A device for increasing the density of a slurry. Traditional Owners Those people who, through membership in a descent group or clan, have responsibility for caring for particular country. Traditional Owners are authorised to speak for country and its heritage. Authorisation to speak for country and heritage may be as a senior traditional owner, an elder, or in more recent times, as a registered Native Title claimant. Under-drainage The provision of drains beneath a tailings deposit to facilitate their drain-down. Upstream method, construction or raising Construction of the tailings containment walls in an upstream direction on top of consolidated and desiccated tailings, using waste rock or tailings. Value chain The processes and practices in the production and use of a material or product that collectively comprise the value of the good. VOCs Volatile organic compounds are emitted as gases from certain solids or liquids. Some VOCs have short-term and long-term health effects. Organic compounds are widely used as ingredients in household products such as paints, varnishes, wax and many cleaning, disinfecting, cosmetic and hobby products. WAD cyanide Weak acid dissociable (WAD) cyanide comprises both the free cyanide and the weak or moderately stable complexes such as those of cadmium, copper and zinc, that is readily released from the cyanide-containing complexes (cyanide forms) when the pH is lowered using a weak acid such as acetic acid. The detailed definition of WAD cyanide may differ depending on the analytical method used (refer to Appendix 1). Waste rock Uneconomic rock extracted from the ground during a mining operation to gain access to the ore. Water balance The sum of the water inputs; including process water and rainfall runoff, and outputs; including evaporation, return water, water entrained in the tailings and seepage, in a tailings storage facility. Water cover Layer of surface water (eg. in a tailings storage facility or pit) or groundwater (eg. in a backfilled pit) intended to limit the ingress of oxygen into AMD-generating materials. 198 LEADING PRACTICE SUSTAINABLE DEVELOPMENT PROGRAM FOR THE MINING INDUSTRY
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LEADING PRACTICE SUSTAINABLE DEVELO
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Disclaimer This publication has bee
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3.0 DEVELOPMENT AND CONSTRUCTION 61
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ACKNOWLEDGEMENTS The Leading Practi
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viii LEADING PRACTICE SUSTAINABLE D
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1.0 INTRODUCTION The Purpose and La
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Airborne Contaminants, Noise and Vi
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Water Management (LP Water) This ha
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Site water team Corporate managemen
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Sustainable Mining There is no one
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Mining the resource efficiently. Th
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Efficiency SUSTAINABLE MINING PRACT
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LOCATION: Vilabouly District, Savan
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Leading Practice The handbooks in t
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2.0 PRE-DEVELOPMENT: MINERAL EXPLOR
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The application of high standard en
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The Business Case for Sustainabilit
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The information obtained from these
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conditions are appropriate. In NSW,
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Such richness also brings challenge
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The dunefields of Shelburne Bay had
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Community Engagement in the Early S
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Baseline studies and social impact
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Upon completion of the study, resea
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The scenarios envisaged for the Wat
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2. Reflections on the significance
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Engaging with Indigenous communitie
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Figure 2.9 - A New Township under C
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Geochemical assessment aims to iden
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Regardless of the project phase (ex
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Evaluating Performance: Monitoring
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For these reasons, it is important
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Risk Management and Exploration Exp
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Post-mining & closure Resource deve
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level of family diversity was maint
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Introduction The development and co
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MINE: Mt Todd LOCATION: Near Kather
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Airborne Contaminants, Noise and Vi
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Biodiversity Management During Deve
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Rather than taking a generic approa
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Step 2: Working in collaboration On
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course was designed to train and pr
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Adjustments for changes in the mine
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indicators of high importance durin
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Operating major mining projects pre
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the earliest stage of development,
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Watercourse diversions In order to
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Figure 3.7 - Morwell River after di
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tailings disposal techniques contin
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Figure 4.2 - Predicted blast overpr
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Responsible management of biodivers
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Leading practice management of wate
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MINE: Pierina Mine LOCATION: Distri
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Weipa - a sustainable approach to t
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Adopting the International Cyanide
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Box 1: Major recent incidents invol
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MINE: Chatree gold mine LOCATION: P
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The audit outcomes also highlight t
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Mercury for gold recovery in small/
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Figure 4.9 - Geological control to
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highest rating group for the whole
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Figure 4.13 - Beverley uranium mine
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from 2.5 - 3.0 tonnes/man-shift to
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Figure 4.17 - Sunrise Dam TSF Taili
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Dry stacking bauxite residue is now
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Once the water is used underground
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The Rio Tinto “Excellence in Wate
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Background Image: Sourced from GOOG
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Company policies and government reg
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5.0 MINE REHABILITATION AND CLOSURE
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Closure involves the implementation
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Biodiversity and Closure Introducti
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e better than the high standard bei
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Figure 5.7 - Pasture and shelter tr
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The Argyle Diamonds case study (see
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support and on site accommodation a
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Having the right information to mak
Page 158 and 159: Figure 5.13 - Misima after rehabili
Page 160 and 161: In January 2011, the PNG government
Page 162 and 163: MINE: Former lignite mines LOCATION
Page 164 and 165: Fig 5.16: Former Minister Stein Coa
Page 166 and 167: Figure 5.19 - Rehabilitated mine si
Page 168 and 169: Figure 5.21 - Pit water treatment p
Page 170 and 171: Final Rehabilitation Rehabilitation
Page 172 and 173: Figure 5.23: Aerial view of Area 4
Page 174 and 175: Landform construction In general, e
Page 176 and 177: The Hsin-Chen Shan quarry terrain i
Page 178 and 179: Figure 5.29 - Spreading topsoil at
Page 180 and 181: Risk Management Risk at closure and
Page 182 and 183: During the 1980s and 1990s, a numbe
Page 184 and 185: An example of direct vegetation is
Page 186: Water Management Central to a mine
Page 189 and 190: Department of Resources, Energy and
Page 192 and 193: GLOSSARY AND ACRONYMS Abandoned min
Page 194 and 195: Biodiversity offsets Conservation a
Page 196 and 197: Cultural heritage Cultural heritage
Page 198 and 199: Engagement At its simplest, engagem
Page 200 and 201: High rate thickener A thickener thr
Page 202 and 203: NAPP Net Acid Producing Potential,
Page 204 and 205: Product stewardship This is perhaps
Page 206 and 207: Risk management process The risk ma
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A guide to leading practice sustainable development in mining

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