Princess Highway Upgrade
Fulton Hogan contracted Global Surface Mining (GSM) to assist with the excavation of rock on a number of significant cuttings along the Princes Highway Bypass.
The rock along the alignment was very consistent and hard initially the plan was to blast in certain areas and use rock breakers elsewhere. The blasting was causing damage to the rock in the walls and rock breaking was very slow and expensive. Excavations were to be carried out alongside the very busy Princes Highway and close to some nearby housing.
Global Surface Mining's 2500SM progressively milled the rock creating the large rock cuttings right up to the edge of the existing Princes Highway. The 2500SM, which is fitted with GPS level and position controls, was also used to box out the road in preparation for the placement subbase material. In the process the excavated material was crushed to less than 100mm in size and mixed. The result was a homogenous sub base material that was recycled and used along the alignment in fill areas.
In addition the 2500SM was able to excavate the walls with great precision and with no damage to remaining rock in the walls. The result was the creation of walls that were structurally very competent and aesthetically very pleasing.
Tiger Brennan Drive Duplication
Global Surface Mining successfully completed works on the Tiger Brennan Drive Duplication Project in Darwin, Northern Territory. This Project involves the creation of new road cuttings along the existing Tiger Brennan Drive from Woolner through to Berrimah Road, for placement of new dual-carriageway pavement.
Surface Mining was selected due to the close proximity to the existing road & housing, with a requirement to maintain traffic access and provide minimal disruption to the surrounding development during the project’s duration. With GSM’s Surface Mining equipment there is no need for disruptive blasting, and the produced material is suitable for use immediately as fill, no further processing required.
Once again, Global Surface Mining have proven the flexibility and suitability of Surface Mining to this type of civil project.
AARR New England Highway
Global Surface Mining took part in an unprecedented project along the New England Hwy at the Kankool Weighbridge, New South Wales. The combination of cement pre-stabilised pavement, thick bitumen to 200mm, and bluestone road base in the highway created a challenge for typical stabilisation equipment requiring multiple passes, a time-intensive approach and heavy tool wear
Global Surface Mining provided Accurate Asphalt and Road Repairs (AARR) with a 2500SM Surface Miner, easily lifting and crushing the road in a single pass. This enabled AARR to proceed immediately to the mixing phase, and resulted on an on-time finish despite a 5-day delay in starting the project due to heavy storms and rainfall.
Roy Hill Rail
As part of the Roy Hill Mine, Global Surface Mining were engaged to work on the Roy Hill Rail Project. This involved the installation of a private mine railway for ore transport, stretching from the Port Hedland loading facility all the way inland to the Mine, in excess of 300km long.
Global Surface Mining used two 2500SM’s to construct cuttings for the rail, provide fill material, and trim blasted ground to RL. This eliminated the requirement to over-excavate and source suitable fill material to bring back to design level – proving Surface Mining to be a significantly more cost-effective method.
Global Surface Mining have recently completed a project at Toodyay where a 2200 Surface Miner was used to cut through cap rock on the road system for Stage 1 of Mauravillo Subdivision. Global Surface Mining also used a 2500SM for cutting in a Laterite Borrow Pit for materials which will be used to fill the roads.