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underground coal mining methods australia

extraction now the most common method in use in Australia and probably worldwide Before longwall mining methods had been developed to operate satisfactorily in most conditions a lot of pillar extraction was carried out using continuous miners and such methods are still in use in places for a...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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