ENVIRONMENT

Metropolitan to reduce subsidence levels

THE use of narrower panels and wider pillars at Peabody Energy’s Metropolitan longwall mine in New South Wales should reduce the maximum subsidence at the surface to 400 millimetres or less, according to an audit by the NSW Resources Regulator.

 Peabody Energy's Metropolitan colliery in NSW.

Peabody Energy's Metropolitan colliery in NSW.

Current and previous longwalls have used a 163m panel width with 50m pillars. Based on the refined modelling and predictions, Metropolitan Coal will proceed with 138m longwall panels and widen pillars...

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