Environment

We believe in leaving our environments in a better state than when we arrived and are committed to attaining an outstanding level of environmental performance in all our operations.

Evolution incorporates environmental considerations into all areas of our business to effectively manage environmental impacts and risks. We have a Sustainability Policy that we expect our people and contractors to adhere to.
We have a social responsibility to not only achieve all legislative compliance expectations but strive for leading practice and to meet the expectations of the communities we operate within and are part of. In FY19 we:

  • Developed and implemented eight Environmental Performance Standards to lift us to a higher standard of environmental performance
  • Instituted governance reviews for our Tailings Storage Facilities
  • Developed and implemented quarterly environmental assurance reviews and integrating environmental considerations into our Life of Mine Plans across all sites
  • Undertook periodic reviews to ensure that our environmental performance targets and objectives are being achieved

The Group has a uniform internal reporting system across all sites. All environmental incidents, including breaches of any regulation or law, are assessed according to their actual or potential environmental  consequence. Our FY19 incidents can be found on our compliance page.

Environmental performance standards

Our Environmental Performance Standards consist of eight key business risk areas: Air quality, Biodiversity, Rehabilitation and Mine Closure, Resource Efficiency and Emission Reduction, Tailings Storage Facilities, Waste, Waste Rock and Ore and Water. 

 

FY19 – Zero catastrophic

or major environmental

incidents

 

Our environmental care and culture is based on:

  • Commitment to our Sustainability policy, with supportive funding and a belief that most environmental incidents are preventable and controllable with foresight, relevant training, purposeful attitude and appropriate equipment
  • Accountability of Management with the support of all our people to ensure that the workplace and the practices comply with statutory and licence conditions
  • Implementing leading industry practices and environmental management systems at all levels: including exploration, development, operations, decommissioning, closure and rehabilitation
  • Regular assessment of the environmental performance of the Company’s activities to ensure compliance with the Company’s commitments and conditions; and to report findings to stakeholders, the community and regulatory authorities
  • Continually striving to identify opportunities to effectively manage energy and water whilst minimising waste and reducing our environmental footprint
  • Increasing awareness of personnel on the potential environment impacts of activities in which we are involved, and how those impacts can be minimised or controlled
  • Maintaining appropriate emergency and critical incident response programs, and to notify the relevant authority in the event of any reportable environmental incident
  • Contribute to conservation of biodiversity and integrated approaches to land use

Click here to view our  Sustainability Policy
Click here to view our Tailings Storage Facility Governance Policy
Click here to view our Sustainability Performance Standards
Click here to view our Sustainability Performance Data table

The Group manages risk through an established management framework which conforms to Australian and international standards and guidance. The Group’s risk reporting and control mechanisms are designed to ensure strategic, operational, legal, financial, reputational and other risks are identified, assessed and appropriately managed.
These are reviewed by the Risk & Sustainability Committee throughout the year.
The financial reporting and control mechanisms are reviewed during the year by management, the internal audit process, the Audit Committee and the external auditors.
The Group has policies in place to manage risk in the area of Sustainability. The Leadership Team, the Risk Committee and the Board regularly review the risk portfolio of the business and the effectiveness of the Group’s management of those risks.


Supporting documents:
Risk and Sustainability Committee Charter
Risk Management Policy
Sustainability Performance Standards

We believe in the power of partnerships, that’s why we like to contribute to projects that are relevant to our communities and leave a positive environmental impact.

In FY19 we continued our program of implementing Environmental Enhancement projects with a primary purpose of improving or enhancing environmental values onsite or in nearby communities. We have eight Environmental Enhancement projects currently under way. Some of these are summarised below:

Great Barrier Reef Conservation – We have partnered with James Cook University to support research which aims to evaluate the contribution of Conservation Park (yellow) zones to the biodiversity conservation in the Great Barrier Reef Marine Park.

Beach Scrub rehabilitation  – In partnership with North Queensland Dry Tropics the project aims to improve the condition and extent of threatened beach scrub ecological community in the dry tropics. The project is situated on public and private land between Crystal Creek and Bowen in North Queensland.

Coastal rehabilitation – In partnership with North Queensland Dry Topics to sponsor the Burdekin waterways environmental enhancement project. The project involves the extraction of weeds in the Kalamia Creek to reinstate an open body of wetlands, restore fauna diversity and improve farm productivity.

Environmental assurance

The Evolution Environmental Assurance Audit Program is undertaken by our corporate office. The program reviews different risk areas and
aspects from the site operating licence each quarter. This assurance program assists in the effective management and monitoring of environmental risk across the organisation.

Quarterly assurance visits to our operations focused on hydrocarbon and chemical management. Small leaks and spill volumes have been  focused on to ensure that incidents are being reported and the causes are promptly addressed.

Rehabilitation success and failures are reviewed with the view that other Sites share the learnings during subsequent Site visits or during our monthly Environmental Professional Network teleconference and our annual face-to-face gathering.

Assurance visit and audit recommendations are tracked and followed up via our company incident management system.

Environmental compliance

As part of our environmental management, Evolution’s activities are governed by conditions detailed in mining approvals, lease conditions and licences set out by regulatory authorities.

Periodic voluntary independent environmental performance audits are also conducted.

Environmental compliance

Total volume of significant spills232L oil

Our Environmental Performance Standards consist of eight key business risk areas. All our sites and workplaces are required to meet the performance standards which are audited on a regular basis.

The eight key business risk areas are:

1. Air Quality
2. Biodiversity
3. Rehabilitation and Mine Closure
4. Resource Efficiency and Emission Reduction
5. Tailings Storage Facilities
6. Waste
7. Waste Rock and Ore
8. Water
Environmental data (water, air emissions and energy) reported from our operations is collated and verified by external environmental accountants Greenbase.

1. Air quality
Our operations develop, implement, communicate and adhere to their air quality management plan. This includes developing and implementing strategies, operational controls, management practices and monitoring/inspections programs to verify that air emission controls are operating properly and to provide relevant, traceable data for internal and external reporting. We manage point and non-point source air emissions to ensure we are protective of human health and the environment. Ambient dust, noise, odour, and spill light impacts on our surrounds and are closely monitored at our operations.
Protection of our local communities means that we operate above compliance in these areas within our community surroundings. We report our air emissions as per our legal and other requirements then communicate the outcomes in the various consultative forums for our operations.
In FY20 Evolution will be trialling a new air quality measurement program with enhanced technology at our Cowal site to monitor particulate matter in real-time.
5. Tailings Storage Facilities
Tailings are the fine waste slurry residue of the crushed solid mineral ore that is fed into the process plant grinding mills. Tailings Storage Facilities need to be operated and rehabilitated with due care for a range of potential issues.
Our performance standards and governance process incorporate the International Council on Mining and Metals (ICMM) six key components of the Tailings Governance Framework.
■ Accountabilities, Responsibilities and Competency; all sites are now equipped with a responsibility matrix
■ Planning and Resourcing; Tailings life of mine project teams are in place at each level of the organisation
■ Risk Management; considered a high priority risk for the organisation all sites have completed Principal Hazard Management Plans, Bowtie risk assessment and Critical Control Plans for each facility
■ Emergency Preparedness and Response; Dam break studies have been completed for all active Tailings Storage Facilities
■ Review and Assurance; tailings governance assurance meetings have been formally introduced during FY19 and will continue at each level of the organisation

Regular inspections and audits ensure that operations meet the requirements for the characterisation of tailings, protection of wildlife, protection of groundwater, prevention of uncontrolled releases to the environment, management of process fluids and the closure and rehabilitation of Tailing Storage Facilities.
Ongoing efficient recovery of tailings decant water back to the processing plant water supply is essential to manage the water balance and minimise new water intake to operations.
Management of wildlife access and safe egress from tailings storage facilities is a key business imperative for our operations. Our fresh water-based operations have cyanide destruction and slurry dilution to reduce weak acid dissociable (WAD) cyanide levels to safe levels for avifauna and terrestrial animals. Fencing, bird deterrent systems and regular monitoring and perimeter patrols provide early warning of such issues.
FY19 Ore processed: 14,211kt (dry tonnes) to produce 654,312oz Au, excluding Ernest Henry.
Tailings Storage Facility Governance Policy –
https://evolutionmining.com.au/tailings-gov-policy/
Sustainability Performance Standards – https://evolutionmining.com.au/wp-content/uploads/2019/08/20190715-GRP-STD-Sustainability-Performance-Standards.pdf
2. Biodiversity
We acknowledge that the nature of our operations can have significant environmental impacts on the flora and fauna that we share the landscape with. We believe that we all have a role in demonstrating our environmental responsibility by minimising impacts and contributing to enduring environmental benefits through every stage of our operations.
We have developed land and biodiversity management plans at each of our operations. These plans are risk-based. The Management Plan for our Cowal site can be viewed on our website at https://evolutionmining.com.au/cowal/ under Environmental Management Plans.
Adaptive strategies include the voluntary and prescribed biodiversity offset areas that are actively maintained for fire, pest and weed control at our operations.

6. Waste Management
Our waste goals aim to reduce, recycle and reuse our resources occurring in our normal site waste management practices.
The on-site management of organic and industrial/inorganic waste streams has progressed to a stage where bioremediation and general landfill facilities and management practices are now relieving pressure on local government authority facilities. Generally septic waste solids are transported to local government authority facilities.
Our operations use specialist, government approved waste management service providers and tracking arrangements for the approved, safe disposal of transfers of obsolete or used hazardous material waste/dangerous goods substances. Generally, chemicals are consumed in process. Hydrocarbons in the form of dirty rags, crushed oil filters, used engine coolants or used bulk lubes are transferred off-site for industrial re-refining (for re-use) or conversion into energy.
A site resource recovery strategy has been implemented at our Cracow project in central Queensland to reduce waste to landfill and enhance our custodianship of the environment.
Effectiveness of the strategy is monitored using our environmental database system to capture and analyse the data collected. Initial data will be shared in FY20.
3. Rehabilitation and Mine Closure
We acknowledge that we are only visitors in our communities and mining is a short-term land use. Our project planning cycle begins with ensuring our minimum disturbance of ground during the exploration drilling phase (10 to 30 years) and needs to look forward to what the operation’s future land uses will be and what the site should look like when the operational areas are ready for relinquishment.
Each of our sites has a closure plan in place which outlines the process to rehabilitate the site and performance criteria required before a tenement can be handed over to Government. These plans take into consideration both environmental and social impacts. Rehabilitation and land use management plans for our Cowal site can be found at https://evolutionmining.com.au/compliance/#cowalpart
In addition to the post mining plans Evolution are actively seeking ways to ensure the land is economically, socially and environmentally sustainable at relinquishment in preparation for future land use.
Initiatives include:
■ Partnering with six other operators in the Kalgoorlie-Boulder region to support regional development including recreational and tourism. The project aims to add economic and environmental value and is then transferred to an external entity and ultimate relinquishment of mining tenure
■ Our Mt Rawdon site is working closely with CSIRO to develop a wetland project to provide a natural treatment of mine affected water that could be reused for irrigation purposes or released back to the natural environment. The CSIRO has developed a synthetic clay called ‘Virtual Curtain’ that reduces the number of contaminants in the water column by binding to the
sediment, thus making it non-toxic
■ Our Mt Carlton team has partnered with environmental specialists in refining quality control in the placement of waste rock as a final landform to ensure potentially problematic material is encapsulated in the most efficient manner for future land use
■ At Cowal we rehabilitated 18.2 hectares of land in FY19. Rehabilitation was complete for waste rock emplacement which stabilised batter slopes with rock armour and provided a stable layer able to support long-term vegetation growth
7. Waste Rock Management
Waste rock is identified as the extracted mineral bearing ore that does not meet a site’s minimum concentration of mineral. This performance standard addresses the characterisation of waste rock, design and construction of waste rock disposal facilities, potential acid generation, storm-water controls, monitoring, rehabilitation and closure.
The performance standard is applied as required based on each ore body and the surrounding waste rock. Each operation is generally quite different in terms of potential for acid mine drainage (AMD) and salinity impact on the surrounding environment. Operations maintain material balances for topsoil, waste rock types throughout the lifecycle of operations for rehabilitation closure criteria requirements.
Where Potentially Acid Forming (PAF) waste rock is suspected or known to occur, the operation will place it inside and under Non-Acid Forming (NAF) covers.
Progressive rehabilitation activities are conducted as areas of the waste disposal facility become available. Full rehabilitation of these areas is conducted as soon as practicable.
FY19 waste rock produced: 37,501kt representing an 6%
reduction on waste rock produced in FY18 (39,905kt).
4. Resource Efficiency and Emission Reduction
Evolution acknowledges that climate related risk has the potential to impact our business and communities.
Evolution is committed to understanding and proactively managing the impact of climate related risks to our business and our environment. This includes integrating financial, physical, regulatory, reputational, market, and climate related risks, as well as energy considerations, into our Life of Mine strategic planning and decision making.
We will work to build the climate related risk resilience of our assets, our communities and our environment.
We will implement sound risk management practices across all areas and activities in our business and apply Board level governance.
Our Sustainability Principles include improving the disclosure of, and actively managing, climate related risks and opportunities, improving energy efficiency and the responsible management of water usage. Climate related risks have been identified as key risks on the Evolution Mining Risk Register which are regularly reviewed and monitored by the Risk and Sustainability Committee.
We will transparently report emissions and energy consumption performance and disclose material climate related risks. The Company has completed a process to identify and assess climate related impacts to our business, with the main areas of focus in the near term to be improving energy efficiency and responsibly managing water use.
8. Water
We recognise the importance of water to our business and our communities. Evolution believes in taking a proactive approach to responsible water management. Our standards aspire to reduce the demand for new water and the overall requirement for water in our operations.
In FY19 our total water withdrawn increased by 6%. This increase was in line with the cumulative total dry tonnes milled which also rose by 1%.
Total water recycled and reused increased by 21% between FY18 and FY19. We use recycled water primarily to process ore and in other activities such as paste fill, irrigation, dust suppression and construction.
Our water management performance standard ensures that our operations effectively manage water, including process water, stormwater, discharges and dewatering activities. As a minimum we comply with all relevant water licensing requirements set by Government and industry regulators.
We utilise probabilistic site water balance models to predict water flow and requirements during droughts and stormwater flows. Our operations prepare for seasonal variations in water flow and maintain routine dewatering activities to satisfy water licence conditions.
In addition, there are water management requirements associated with tailings and waste rock management designed to manage risks associated with unwanted events. Each of our operations separate clean water (rainfall runoff in non-disturbed areas) and potentially mine affected waters (rainfall runoff within the mining footprint). Waters which are captured within the mining footprint are reused in an effort to reduce the demand on our external supplies.
The various streams of water have specific water management requirements. The performance standard guides operations to ensure that clean water is kept separate from contaminated water (a similar management strategy is used for other waste by-product streams).

Supporting documents:
Sustainability Policy
Tailings Storage Facility Governance Policy
Sustainability Performance Standards

Incident level201920182017
Catastrophic000
Major000
Moderate979

Evolution acknowledges that climate related risk has the potential to impact our business and communities. 

Evolution is committed to understanding and proactively managing the impact of climate related risks to our business and our environment. This includes integrating financial, physical, regulatory, reputational, market, and climate related risks, as well as energy considerations, into our Life of Mine strategic planning and decision making.
We will work to build the climate related risk resilience of our assets, our communities and our environment. 
We will implement sound risk management practices across all areas and activities in our business and apply Board level governance.
Our Sustainability Principles include improving the disclosure of, and actively managing, climate related risks and opportunities, improving energy efficiency and the responsible management of water usage. Climate related risks have been identified as key risks on the Evolution Mining Risk Register which are regularly reviewed and monitored by the Risk and Sustainability Committee.
We will transparently report emissions and energy consumption performance and disclose material climate related risks. The Company has completed a process to identify and assess climate related impacts to our business, with the main areas of focus in the near term to be improving energy efficiency and responsibly managing water use.
As a mining company, we can contribute to global efforts to combat Climate Change by promoting energy efficiency and reducing emissions. Each year we create and submit annual reports for the National Pollutant Inventory (NPi) and the National Greenhouse and Energy Reporting Act (NGER) to estimate greenhouse gas (GHG) emissions and energy use.

A summary of FY19 results is provided in the tables below.

FY19 Energy

Energy consumption (GJ)FY19FY18FY17FY16
Total3,986,9054,075,4934,402,6954,415,040
Energy intensity (ore processed -GJ/tonne)
Strong0.2800.2910.2720.273

Ore processed does not include our financial stake in Ernest Henry.

FY19 Emissions

Total direct and indirect emissionsFY19FY18FY17FY16
Greenhouse gas emissions Scope 1 (t CO2-e)*155,085159,061167,734157,584
Greenhouse gas emissions Scope 2 (t CO2-e)^383,449394,144430,993472,257
Total of Scope 1 and Scope 2 (t CO2-e)538,533553,205598,727629,841
Sulphur oxide SOx (kg)9169261,002936
Nitrous oxide NOx (kg)1,397,6761,395,2771,521,7181,627,006
Carbon Monoxide (CO) (kg)719,005701,930886,918788,636
Particulate matter <10um (kg)4,260,1144,323,7575,163,5745,585,918
Particulate matter <2.5um (kg)88,47186,68395,254104,208
Total volatile organic compounds (VOC) (kg)90,03686,38097,958110,103

The energy and emissions boundary is based on operational control as defined by the National Greenhouse and Energy Reporting (NGER) Act 2007. The applied global warming potential (GWP) rates and emission factors are based on the NGER Act (2007) and the National Pollutant Inventory.
*. Scope 1 refers to emissions produced directly by operations, primarily resulting from combustion of various fuels and includes CO2-equivalent values for greenhouse gases such as CH4, N20 and SF6.
^. Scope 2 refers to indirect emissions resulting from the import of electricity from external parties; commonly the electricity grid.

Evolution Mining GHG and Energy Summary

Evolution creates and submits annual reports under the National Greenhouse and Energy Reporting Act to estimate greenhouse gas (GHG) emissions and energy use. All methods used to estimate GHG emissions and energy were drawn from the National Greenhouse and Energy Reporting (Measurement) Determination 2008, as amended for the relevant financial year. All results shown are based on Evolution’s own estimates, and may differ slightly from results published by the Clean Energy Regulator due to differences in rounding.

For historic information of NGER results, please click here.

NGER Summary

SiteFY19FY18FY17FY16FY15
Scope 1
(t CO2-e)
Scope 2
(t CO2-e)

Energy Use
(GJ)
Scope 1
(t CO2-e)
Scope 2
(t CO2-e)

Energy Use
(GJ)
Scope 1
(t CO2-e)
Scope 2
(t CO2-e)

Energy Use
(GJ)
Scope 1
(t CO2-e)
Scope 2
(t CO2-e)

Energy Use
(GJ)
Scope 1
(t CO2-e)
Scope 2
(t CO2-e)

Energy Use
(GJ)
Cowal 70,741202,1681,913,53772,221209,7421,947,89646,208208,9751,564,88742,382208,7451,508,45060,723214,1291,781,119
Cracow7,76441,762303,5887,47137,774283,6257,48635,782276,6628,58035,104288,5009,07933,847282,768
Mt Carlton10,73525,339266,91510,02626,423263,31710,00525,982265,0678,73425,265243,8169,34425,347252,295
Mt Rawdon35,88367,011826,71837,84172,349897,08141,57667,127913,03236,88567,714846,90631,65969,338770,615
Mungari 29,93547,092675,46631,50147,749701,16431,69551,672719,26927,95753,169658,39826,78752,149641,735
Edna May30,76441,348663,86626,87746,872616,69523,56546,634570,593
Pajingo6,08335,231250,3476,96928,247228,220
Other *7736387411841,197
Corporate107488157731152688
Group155,080383,4493,986,903159,061391,1444,075,493167,734430,9934,402,695157,584472,2574,415,040168,126469,8434,528,033

Note: 
1. In FY16 Other refers to Blue Funnel Operations and Wirralie Exploration
2. In FY15 Cowal returned submitted by Barrick and Mungari return by La Mancha

We are committed to improve our transparency about tailings facilities information. As part of this commitment, we have responded to the Church of England Pensions Board and the Council on Ethics Swedish National Pensions Funds’ request for specific disclosures of our tailings facilities and in FY20 have publically made this available on our website.

To view the tailings dam management disclosure, please click here.

Evolution acknowledges that Electricity is a significant cost to our operations, and it is constraining us from expanding mill capacity at two of our operations. We believe there is an opportunity to analyse our power consumption and correlate it with our production patterns to develop techniques which
optimise our electricity usage, reducing our costs and enabling improved throughput and recoveries of our mills.

To view the Electricity Usage Summary for FY16 – FY19 results, please click here.

We recognise the importance of water to our business and our communities. Evolution believes in taking a proactive approach to responsible water management. Our standards aspire to reduce the demand for new water and the overall requirement for water in our operations.
In FY19 our total water withdrawn increased by 6%. This increase was in line with the cumulative total dry tonnes
milled which also rose by 1%.
Total water recycled and reused increased by 21% between FY18 and FY19. We use recycled water primarily to process ore and in other activities such as paste fill, irrigation, dust suppression and construction.
Our water management performance standard ensures that our operations effectively manage water, including process water, stormwater, discharges and dewatering activities. As a minimum we comply with all relevant water licensing requirements set by Government and industry regulators.
We utilise probabilistic site water balance models to predict water flow and requirements during droughts and stormwater flows. Our operations prepare for seasonal variations in water flow and maintain routine dewatering activities to satisfy water licence conditions.
In addition, there are water management requirements associated with tailings and waste rock management designed to manage risks associated with unwanted events. Each of our operations separate clean water (rainfall runoff in non-disturbed areas) and potentially mine affected waters (rainfall runoff within the mining footprint). Waters which are captured within the mining footprint are reused in an effort to reduce the demand on our external supplies.
The various streams of water have specific water management requirements. The performance standard guides operations to ensure that clean water is kept
separate from contaminated water (a similar management strategy is used for other waste by-product streams).

Water withdrawal

Water withdrawal surface (ML) waterFY19FY19 changeFY18
Surface water (ML)3,50669%2,077
Groundwater – mine dewatering (ML)3,034-6%3,212
Groundwater – borefields (ML)1,5898%1,476
Rainwater (ML)1,000-46%1,856
Municipal water (ML)6612%59
Total water withdrawal9,1946%8,680
Reused (ML)8,54522%7,018
% Total reused93%15%81%
0.655%0.62

Water discharge

Water discharge (ML)Surface waterSewers that lead to waterLand – Dust suppressionLand – IrrigationGroundwaterTreatment FacilityTotal
Total1,55201,07412.704543,093

Our waste goals aim to reduce, recycle and reuse our resources occurring in our normal site waste management practices.

The on-site management of organic and industrial/inorganic waste streams has progressed to a stage where bioremediation and general landfill facilities and management practices are now relieving pressure on local government authority facilities. Generally septic waste solids are transported to local government authority facilities.
Our operations use specialist, government approved waste management service providers and tracking arrangements for the approved, safe disposal of transfers of obsolete or used hazardous material waste/dangerous goods substances. Generally, chemicals are consumed in process. Hydrocarbons in the form of dirty rags, crushed oil filters, used engine coolants or used bulk lubes are transferred off-site for industrial re-refining (for re-use) or conversion into energy.
A site resource recovery strategy has been implemented at our Cracow project in central Queensland to reduce waste to landfill and enhance our custodianship of the environment. Effectiveness of the strategy is monitored using our environmental database system to capture and analyse the
data collected. Initial data will be shared in FY20.

FY19 Waste information

Mineral wasteWaste material mined (kt)Solids in tailings (kt)Total ore processed (kt)Waste oil/grease – recycled (kL)Explosives (t)*
Total37,70814,16214,2217312,505

* The reporting period for liquid fossil fuels, lubricants and explosives is July 2018 to June 2019 and reported as part of the National Pollutant Inventory.

Non-mineral waste information

TonnesOff-site landfillOn-site landfillOff-site recyclingTyres disposed of on-sideSteel – recycledPlastic – recycled
Total7,2071,792456104720

 

We acknowledge that we are only visitors in our communities and mining is a short-term land use. Our project planning cycle begins with ensuring our minimum disturbance of ground during the exploration drilling phase (10 to 30 years) and needs to look forward to what the operation’s future land uses will be and what the site should look like when the operational areas are ready for relinquishment.
Each of our sites has a closure plan in place which outlines the process to rehabilitate the site and performance criteria required before a tenement can be handed over to Government. These plans take into consideration both environmental and social impacts. Rehabilitation and land use management plans for our Cowal site can be found at https://evolutionmining.com.au/compliance/#cowalpart.
In addition to the post mining plans Evolution are actively seeking ways to ensure the land is economically, socially and environmentally sustainable at relinquishment in preparation for future land use.

Initiatives include:

■ Partnering with six other operators in the Kalgoorlie-Boulder region to support regional development including recreational and tourism. The project aims
to add economic and environmental value and is then transferred to an external entity and ultimate relinquishment of mining tenure
■  Our Mt Rawdon site is working closely with CSIRO to develop a wetland project to provide a natural treatment of mine affected water that could be reused for irrigation purposes or released back to the natural environment. The CSIRO has developed a synthetic clay called ‘Virtual Curtain’ that reduces the number of contaminants in the water column by binding to the sediment, thus making it non-toxic
■  Our Mt Carlton team has partnered with environmental specialists in refining quality control in the placement of waste rock as a final landform to ensure potentially problematic material is encapsulated in the most efficient manner for future land use
■  At Cowal we rehabilitated 18.2 hectares of land in FY19. Rehabilitation was complete for waste rock emplacement which stabilised batter slopes with rock
armour and provided a stable layer able to support long-term vegetation growth

Rehabilitation and closure management

Land management (ha)Land disturbedLand rehabilitated
Total2,98418.2

Case Studies

Scroll to Top