In this article:
- How does the latest Commonwealth Government-funded Cooperative Research Centre aim to drive sustainable post-mining transitions?
- See what score you get for your Rehabilitation and Closure program
- Find out about Innovative technologies that are helping the CRC drive transformational rehabilitation
What is CRC-TiME?
Decipher CEO, Anthony Walker explains that CRC-TiME (Transitions in Mining Economies) brings together 50 leading mining companies, mining equipment, technology and services (METS) companies, regional development organisations, local, State and Commonwealth governments and research partners. This unique coalition will bring scale and coordinated investment in research that will deliver transformational change in mine closure. CRC-TiME will provide all the stakeholders involved with the closure, relinquishment and creation of a post-mine regional future with new tools and technologies to make better decisions and lower residual risk into the future.
“CRC TiME has the potential to create hundreds of new opportunities and regional jobs through the implementation of restoration activities and increased supply of closure and post closure products and services.“CRC TiME brings together Australia’s leading researchers to deliver new solutions to this highly complex challenge. With world leading expertise and significant capability, the CSIRO is a major contributor to our partnership.” The CRC has commenced July 1, providing a collaborative platform involving industry, government, research organisations, including Australia’s national science agency CSIRO, and diverse members of the community. It will deliver knowledge, technologies and solutions for a vision of sustainable mine closures and regional economic opportunities. Dr Jason Kirby, who leads CSIRO’s involvement in the new CRC, said the CRC will drive transformational change in the mining industry through a clear shared vison of post-mining options, benefits and outcomes. “It will look at harmonised concepts of risk; and intervention technologies and solutions to enable regions and communities to transition to a prosperous and sustainable post-mine future,” he said. It’s an ambitious goal by any measure. Like any commodity, resources pulled from the ground are sold at the whims of an unpredictable global market. Every nugget of ore must turn a profit for its recovery to be worth the effort. Meanwhile, society’s expectations about how our nation’s natural resources are managed are evolving. To maintain the environment for future generations, mining needs to be sustainable. To satisfy diverse cultural needs, values must be respected, and mining must demonstrate a “social license to operate”. And when a mine reaches its end-of-life, the community depending on it needs support in transitioning to a post-mine future. “The broader community’s expectations of the mining sector are high,” said Dr Kirby. “Acknowledging and addressing these will ensure the mining sector continues to contribute strongly to the national economy and Australian society into the future.”
TiME for changesIn 2018, a national Senate inquiry into the rehabilitation of mining and Commonwealth resource projects made it clear that any question-mark over the fate of a mine site puts its very finances at risk. In a world where social and environmental responsibilities increasingly matter to shareholders, mines with no clear shared vision for transitioning to closure, including final landforms and regional economic value and benefits, aren’t attractive investments. Good science and robust technology are key to ensuring environments are well protected into the future. A collaboration between CSIRO, Australian Wetlands Consulting, and Evolution Mining’s Mt Rawdon Operation has been trialling an integrated wastewater management process involving a synthetic clay using Virtual Curtain technology, along with a series of constructed wetlands using biological-driven processes to remove pollutants. New methods for ore extraction could also extend the life of mines previously abandoned or closed for environmental or economic reasons. Emerging technology called in-situ recovery (ISR), may provide an economically viable and low environmental footprint process to targets minerals, such as gold or copper, in the ground by circulating a fluid(s) through an area’s geology. Under some circumstances, ISR could be used for mineral extraction without disrupting the countryside at abandoned or legacy mine sites. South Australia’s first profitable copper mine in the mid-19th century, is a historical test site for ISR, with more than 100,000 tonnes of copper potentially recoverable through the process. CSIRO is evaluating the extraction, environmental impacts, and community expectations of this ISR process through a $2.8 million project at the Kapunda mine. CRC TiME’s partnership presents a unique opportunity to establish a National Demonstration Mine Site Network to provide a pathway to develop, test, and demonstrate innovative and emerging technologies and solutions in mine environments, said Dr Kirby.
Ecosystem trajectoriesBut how do we return a mine site to a healthy and biodiverse ecosystem, how long does it take, what will it cost, and when will we know we’re on track to achieving this goal? Providing more certainty around costs and timelines for ecosystem rehabilitation enables mining companies to effectively plan for these from the start, increasing the likelihood of mine relinquishment and improving environmental outcomes for the whole community. A collaborative project between CSIRO, federal Department of Agriculture, Water and the Environment, and Energy Resources Australia is using ecosystem models, known as state and transition models, to capture our best understanding of ecosystem recovery pathways after mining, including both desirable and undesirable trajectories. Recognising when ecosystems are deviating down an undesirable pathway, such as invasive weed problems, early on, can reduce the costs and time required to manage threats and return ecosystems to a desirable development pathway. State and transition models are used to quantify and better manage the risks of problems arising. The models also identify when ecosystem development is on a desired trajectory, helping mining companies to meet regulatory requirements around closure sooner, leading to a greater likelihood of successful mine closure.
Transitioning communitiesEvery phase of a mine’s life brings new opportunities and challenges to different sectors of society. The swings and roundabouts of a mining operation through the booms and busts can have diverse impacts on different sectors of the surrounding populations, said Dr Tom Measham, a CSIRO principal research scientist focused on industry and how regional communities and economies are affected by them.
“During mine exploration and operations there can be positive benefits and impacts to regional communities, such as increased employment, income, and skills,” he saidThe ripple effects of higher house prices, new infrastructure, and investment in new services are great for those in a job, with a house, or in business. But negative impacts can occur for those struggling to pay rent or working in a competitive field, or those who can’t get or keep a job. When mines close, adapting and transitioning is no less complicated. What’s more, no two communities face the same roadmap of ups and downs. “Some regions have diversified economies and have multiple options,” said Dr Measham. “Others are more dependent on mining and have fewer options.” To assist regional communities once reliant on mining to forge new paths or adjust to new technologies, it’s vital for authorities to remain transparent and work closely with the regional community as early as possible.
“A key factor is planning ahead – those regions which take steps to plan and prepare during the life-of-mine will find it easier to navigate to a post-mining future,” he said.The CRC TiME will support both communities and companies to map options based on the values, strengths and circumstances of each region, solving the challenges that mining will continue to face in a rapidly changing world.
New technologies leading the way for CRC-TiMEOne of the key industry partners, Decipher will be bringing expertise around software solutions in mine closure and rehabilitation, tailings reporting and monitoring, and data processing to the CRC-TiME. Born within the Industrials Division of Wesfarmers, Decipher is an award winning Software-as-a-Service (SaaS) company delivering cloud solutions that aims to help the industry drive progressive closure and rehabilitation, and proactive tailings management. Decipher chief executive, Anthony Walker says he is optimistic about the cultural change in the mining sector. “Decisions about mine closure in Australia have tended to have little consideration of how the land might be used post-mining. However, this is beginning to change, particularly with increased stakeholder pressure, environmental concerns and regulatory changes,” Walker says. The company is looking to leverage its satellite and LiDAR-based tools and data processing technology to facilitate research on mine rehabilitation.
“The CRC-TiME could not have come at a better time, and I’m really excited that we have the technology to help revolutionize the task of mine rehabilitation and closure, and ultimately improve those rates of relinquishment of land,” Walker says.
Decipher’s Rehabilitation & Closure SolutionArmed with Decipher’s Rehabilitation & Closure solution, including GIS, remote sensing, monitoring and management tools means you can easily capture and analyse a wide range of environmental monitoring data, manage risks and issues around put backfilling, rapid flooding, slope instability and acid generation, and ensure you’re meeting your environmental obligations and compliance with alerts and notifications of exceedances.
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Want to find out more about mine rehabilitation?
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- What is CRC-TiME?
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- Download this free Guide to Mine Rehabilitation in Australia