Pyritic shale integration into waste rock management, Mt. Whaleback
Conference
·
OSTI ID:20023317
BHP Iron Ore operates the Mt. Whaleback mine in a semi-arid climate adjacent to Newman, Western Australia, approximately 1,200 km north-northeast of Perth, Western Australia. More than 2 billion tones of waste rock were excavated and deposited on the surface during the past 30 years. Ultimately, approximately 4 billion tonnes will be deposited in waste rock dumps constructed near the open pit. Management of the potentially acid forming pyritic shale is based on the application of state-of-the-art conceptual and numerically modeling tools, and operational considerations. The potentially acid forming material is encapsulated within barren run-of-mine material. A moisture storage and release cover system is employed to control water infiltration on the sloping and horizontal waste rock surfaces. This paper will first summarize the overall environmental management plan at Mt. Whaleback. The rationale for differentiating waste rock types is presented. A summary of the design of the moisture storage and release cover system is offered. Finally, performance of field trials are summarized.
- Research Organization:
- O'Kane Consultants Inc., Saskatoon, Saskatchewan (CA)
- OSTI ID:
- 20023317
- Country of Publication:
- United States
- Language:
- English
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