Yancoal deploys 28 quiet dozers at Hunter mine site in an effort to reduce mining noise impacts

Testing of the Cat D10 and Cat D11 machines at the Mount Thorley Warkworth and Moolarben sites have shown they significantly reduce noise emissions externally and for machine operators.

"Through developing a new rubber dampening system to suppress vibration and alleviate the classic 'clanging' associated with a dozer track revolving around its sprocket, we've been able to achieve a sound reduction of three decibels," WesTrac Mining Business Manager Craig Morris said.

"On the logarithmic decibel scale, this is equivalent to a halving of sound energy emitted by the machines and a 23 per cent decrease in loudness."

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Yancoal heavy mining equipment category manager Matthew Staff said noise reduction was a top priority at the company's Hunter mine sites.

"Our commitment to compliance remains of the highest standard on all fronts to ensure our operating licences and individual mine plan approvals continue to be met and Yancoal can support communities and the local economy," he said.

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