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Mangoola Coal Operations

CLIENT
Mangoola Coal Operations Pty Ltd
LOCATION
Wybong, NSW
Mangoola Coal Operations, located in the Hunter Valley, is a major open-cut mining operation committed to responsible resource management and progressive rehabilitation. As part of its closure planning, the site required a comprehensive capping solution for two decommissioned tailings dams: TD1, with a capacity of 3,400 ML, and TD2, with a capacity of 3,900 ML. The Stage 2 capping works covered an area of approximately 222,000 m2.
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Closure and Rehabilitation, Construction Support and Management, Dams Engineering, Geotechnical Investigation, Materials Characterisation, Tailings Management, Water Resources
Australia/New Zealand

AGL Macquarie Bayswater Power Station

CLIENT
AGL Macquarie
LOCATION
NSW
ATC Williams (ATCW) has supported ash management and rehabilitation planning at Bayswater Power Station since 2020, delivering ash reconciliation, storage capacity assessments, geotechnical investigations, landform design and long-term rehabilitation strategies. As part of the planned closure of the power station in 2033, AGL Macquarie engaged ATCW to develop a practical, cost-effective strategy for rehabilitating Ravensworth Void 4 and Void 5.
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Closure and Rehabilitation, Geotechnical Investigation, Materials Characterisation, Tailings Management
Australia/New Zealand

Ravensworth Operations

CLIENT
Glencore
LOCATION
Ravensworth, NSW
Glencore engaged ATC Williams to deliver the geotechnical investigation, detailed design and construction support for closure of the Dam 7 South Tailings Storage Facility (TSF) at Ravensworth Operations in the Hunter Valley, New South Wales. The project required an engineered capping platform over an extremely low-strength in-pit coal tailings deposit, enabling future overburden emplacement under the site’s closure strategy.
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Closure and Rehabilitation, Tailings Management
Australia/New Zealand

Mount Thorley Warkworth

CLIENT
Yancoal
LOCATION
Hunter Valley, NSW
ATC Williams has supported TD2 throughout almost its entire operational life, first becoming involved at Mount Thorley Warkworth in 1999. Each investigation and design builds on previous monitoring, geotechnical assessments and operational experience, so strategies can be refined as tailings conditions evolve.
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Closure and Rehabilitation, Dams Engineering, Geotechnical Investigation, Tailings Management
Australia/New Zealand

Closed Landfill Site Assessments and Rehabilitation Designs

CLIENT
Toowoomba Regional Council
LOCATION
Queensland
Toowoomba Regional Council (TRC) were faced with the challenge of meeting regulatory and community expectations regarding the closure and rehabilitation of 28 closed landfill sites as well as rationalising fill-planning for the remaining nine regional operational sites.
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Closure and Rehabilitation, Waste & Resource Recovery
Australia/New Zealand

East Weipa Operations

CLIENT
Rio Tinto
LOCATION
Northern Queensland
A detailed design for the decommissioning of two Tailings Storage Facilities no longer operational (estimated combined area of 150ha) at the Rio Tinto East Weipa bauxite mining operations located in northern Queensland.
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Closure and Rehabilitation, Tailings Management
Australia/New Zealand

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