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Crushing Hard Rock Face Pulverisers Invest Benefit Calculator

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Powder factor 05kg per square metre of face Do not stem holes Fire all holes on the same delay or in groups of 5 holes Smooth Blasting Spacing 15 x Hole diameter hard rock 20 x Hole diameter soft rock Burden 125 x Spacing Fire as many holes as possible on one delay Stem holes Powder factors Typical powder factors

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