Daunia Mine civil works
Between 2011 and 2013, Golding successfully completed two civil construction projects with a combined worth of $240m to develop BMA’s Daunia Coal Mine infrastructure to prepare the mine for operation, including bridges and culverts and civil works. These works, delivered early and under budget, assisted BMA to achieve first coal from the mine four months ahead of target. As 98% of the work on the project was self-performed, Golding was able to rapidly respond to the client’s needs as the overall critical path changed due to design development.
Golding’s scope for the bridges and culverts contract involved 70m wide and 46m (three span) rail overpass bridge, three 15m bridges, conveyor reclaim tunnel, load-out facilities bulk earthworks, a number of temporary public access road and permanent access roads, concrete works and associated civil works, erosion control structures, culverts with a fish ladder baffle installation and a new light vehicle access road as well as an upgrade of an existing access road.
Golding’s scope for the civil works included 1,000,000t of pavement materials (500,000t crushed on site by Golding), 3,000,000m3 of earthworks, 3,200m2 of reinforced walls, eight separate dams (2 HDPE lined) and 50km of pipes and conduits.
More than 200 scope changes were initiated by the EPCM during the design development process resulting in a 50% growth from the initial work scope. Scope changes took place concurrently with construction and were negotiated by mutual agreement between Golding and Bechtel as EPCM. Golding’s ability to work collaboratively with the client through these scope changes was a significant factor in the work being completed early.
Golding were required to consolidate three safety management systems (Golding, Bechtel and BMA) into a customised approach for each activity and site requirements that satisfied all parties.
Golding’s collaborative, best for project approach to Health, Safety and Environment throughout the project, meant that 1,100,000 labour hours were completed with zero LTIs, one recordable injury, and no environmental incidents.
Another challenge was effective onboarding of the 450 employees required to deliver the project. More than half had not previously worked under the Coal Mining Act and almost 3,000 competencies were delivered to employees during the contract.