First Cat MD6250 drill in Queensland to be delivered to coal mine

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Hastings Deering has received the only Cat MD6250 rotary blasthole drill in Queensland, delivering it to contractor Mining and Civil Australia (MACA).

The Cat MD6250 rotary blasthole drill has been delivered to Bluff Coal mine in Queensland

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The delivery to Bluff Coal mine, east of Blackwater, makes it the first drill of its kind to enter the territory for works in the open cut coking coal operation.

Commencing its journey in Caterpillar’s Denison factory in Texas, USA, the MD6250 was transported in components to Brisbane before travelling 615km by road to Rockhampton.

Once the components were delivered, Hastings Deering’s team of engineers set aside a week to assemble the drill before delivery to the Bluff mine site to the west of the city.

The advanced features on the crawler-mounted Cat MD6250 drill are set to maximize fuel efficiency and improve drilling for the contractor.

Its features include a Cat C27 engine, variable compressor output controls, drill depth indicators and virtual head stops for operators.

"It’s an interesting site as there are restrictions around noise. MACA had experience with the MD6250’s predecessor model and believed they could get the same value and production out of the new model," says Adam Davis, product manager for drills and large motor graders at Hastings Deering.

"The MD6250 has proportional hydraulics, which means the machine makes less noise during operation and the fan circuit only operates when it needs to. The machine only creates horsepower when needed, which cuts down on heat, noise and energy."

Davis says the mine’s purchase of the MD6250 drill is in line with an industry trend towards using high-tech, mid-size drills suited to drilling holes smaller than 270mm

The MD6250, is equipped with a hole diameter range of between 152–250mm.

"In places like the Hunter Valley in New South Wales, it’s the norm to go for mid-size machines with this kind of technology, and it’s possible that this could also happen in Queensland in the future," says Davis.

"Once the larger coal seams begin to shrink in size and the work moves to higher-grade coal seams, smaller machines are used as they are better suited to such applications."


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