Need help defining your reserves?

A month after reviewing an article he wrote nearly two decades ago about the geologist’s role in the valuation of quarry reserves, Bill Langer describes how such reserves should be classified and defined today …
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Tough, robust trommel

The MDS M515 heavy-duty trommel is capable of handling rocks weighing up to a tonne, while delivering an output of up to 500 tonnes per hour.
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