In this article:
- This article is written by ICMM on their member, Glencore
- Closure governance is a critical element to successful mine closure, underpinning the planning and execution of closure process.
- Glencore has adopted a governance approach for effective closure planning, implementing it across their Australian coal operations. This has optimised the integration of closure into business planning and helped to reduce closure liabilities.
- Examples of mining rehabilitation
- See what score you get for your Rehabilitation and Closure program
- Find out about Decipher’s Rehabilitation and Closure solution
Approach to rehabilitationRehabilitation is the process of minimising environmental impacts and restoring or enhancing the landscape following mining operations. Since 2010, Glencore has set and achieved more challenging rehabilitation targets, helped some sites address rehabilitation backlogs and created a process to measure progress towards rehabilitation goals. Glencore is committed to landform design and rehabilitation progress is an important part of their life of mine planning and budget processes. Glencore Coal’s Land & Property Manager, Nigel Charnock, explains how they’ve approached this:
“Planning for rehabilitation and closure at all Glencore operations starts as early in the mine life as possible; with our contemporary mines this takes place before first coal is mined. Rehabilitation is then scheduled into annual and short-term (daily) mine plans to ensure the work is adequately resourced, budgeted and delivered as part of ongoing mining operations.”Each of Glencore’s sites is required to prepare an Annual Rehabilitation and Closure Plan (ARCP) as part of the budget cycle to allow for effective planning. The plans go beyond any regulatory requirement and aim to ensure that at all sites the active mining footprint is minimised. These annual plans include targeted areas for disturbance, shaping and seeding for the budget year ahead, as well as forecasts for rehabilitation across the operating life of the mine to minimise the work that needs to be done once mining has ended. “It’s not just about quantity,” says Nigel,
“Our site rehabilitation has to be quality as well; that is, capable of meeting an agreed end land use, as is the case with those mines that have achieved Government sign-off to date.”Progressive rehabilitation has required them to ensure that rehabilitation programs are resourced, budgeted and delivered and their plans include targets for disturbed land, shaping and seeding; forecasts for rehabilitation across the life of mine to avoid large, end-of-mine legacies; and plans to address legacy issues and/or rehabilitation backlogs. Progressive rehabilitation has enabled them to reduce their active disturbance footprint and minimise the rehabilitation liability at the end of the mine life as far as practicable. While machinery movement is underway, it provides them with an opportunity to integrate any selective material handling requirements and final landform goal increments within the short range earthmoving equipment forecasts of mine schedulers providing efficient utilisation of mining fleet for rehabilitation works and the most cost-effective rehabilitation outcomes. Once mining has finished, land is returned to either self-sustaining native ecosystems, open woodland, agricultural use or other suitable purposes that meet requirements agreed between Glencore, Government and local communities. To implement these ARCPs, an integrated approach involving mine planning, production and rehabilitation functions is required so that closure work can be incorporated as far as is practical into the day-to-day operation of the mine, even if the mine’s actual closure is still decades away. While machinery movement is underway, it provides an opportunity to integrate any selective material handling requirements and final landform goal increments within the short-range earthmoving equipment forecasts of mine schedulers. It means efficient utilisation of the mining fleet for bulk shaping works and the most cost-effective rehabilitation outcome.
Measuring performanceRehabilitation and closure forms an important part of a mine’s daily planning. Delivery of rehabilitation is measured against a number of checks and balances in internal reporting that aim to drive strong performance and continual improvement in rehabilitation. One of the strongest of these are key performance indicators (KPIs) that have been developed and form a part of each site’s performance incentive scheme to help facilitate the successful integration of:
- Planning (integration, resourcing, scheduling).
- Progress (focusses on completing areas against a quantitative target).
- Performance (quality of work completed, monitoring and maintenance).
- Reporting (accuracy and timeliness).
“This translates complex rehabilitation monitoring data into an easily understandable tool, and assists the mine rehabilitation specialists to plan, budget and explain to other stakeholders the results from this monitoring.”The Rehabilitation Report Card process is used by all of Glencore’s coal operations in Queensland and is currently being rolled out to mines in New South Wales as well. One of the key benefits is that all operations follow a standardised, repeatable process. It also removes measurement bias, delivering a robust process with scientific rigour to stand up to future scrutiny.
Glencore’s resultsSince the introduction of improved internal requirements for planning and implementation of rehabilitation across their sites, their increased focus on this area has delivered outstanding results.
How to drive progressive rehabilitation and closure
[embedyt] https://www.youtube.com/watch?v=340Weed-sww[/embedyt] Originally published by ICMM.
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?
- See what score you get for your Rehabilitation and Closure program
- What is mine rehabilitation and closure?
- What are some key challenges facing mine rehabilitation and closure?
- How much does mine rehabilitation cost?
- What are the advancements in mine rehabilitation technology?
- What are some best practice mine rehabilitation methods?
- How to take a macro and micro approach to mine rehabilitation
- What is CRC-TiME?
- How to become an industry leader in mine rehabilitation
- Download this free Guide to Mine Rehabilitation in Australia