Glencore Baal Bone Colliery
Following the closure and decommissioning of the Baal Bone underground and open cut training mine, Glencore engaged CMA Contracting to deliver a multi-discipline works programme to remediate and rehabilitate the 100+ hectare site. Works included demolition, large scale civil construction and bulk earthworks, environmental management, recycling, and asbestos and hazardous waste management.
Glencore Baal Bone
Central West, NSW
Our scope of works included:
- Bulk Earthworks & Haulage (540,000m3)
- Dozer Directional Push & Short Haul(460,000m3)
- Earthworks to reshape and contour landform to a design surface
- Detailed Earthworks & Drainage for >50Ha
- Vegetation Clearing on overburden stockpiles and selected removal of Pine Trees
- Rehabilitation of water ways including revetment of Creek Embankments
- Seeding and tube stock planting of native vegetation of >60Ha
- Management of hydrocarbon contaminated soils ( 3,000m3)
- Sitewide water management in conjunction with Client environmental engineers and objectives
Key challenges faced by our team included extensive key stakeholder engagement, verification of earthworks quantities and design surface models, significant environmental controls – dust and water controls extending across the 100+ Ha site, strict monitoring (and achievement) of annual rehabilitation targets, and geotechnical works for the capping of a Coarse & Fine Coal Tailings Dam.
Other key achievements included:
- 50,000 accrued work hours
- Nil/zero LITs or MTIs
- >9,000m3 moved per day (Heavy Vehicle movements).
- >4,000m3 moved per day (Dozer Push).
- 160,000m3 of Overburden moved in 2 months (inclusive of wet weather delays)
- 16Ha of Grassland Seeding
- 6Ha of Native Woodland Seeding
- >10Ha of non native vegetation cleared3
- Tailings Dam capped with 80,000m3 of CCR
- Scarification of 14Ha of Powerpole Eeasement for native regeneration
- Mechanical, Induced Collapse & Explosive Demolition of redundant colliery plant
In total, the CMA team moved, shaped or pushed more than 1,000,000m3 of earth. Works also involved a live waterway and re-establishing a former creek, as well as extensive use of drove surveying and geotechnical methods, with GPS enabled earthmoving equipment to optimise work planning and execution. A total of 60 Ha of land was remediated and rehabilitated.