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    • Supply TypeManufacturer, Exporter, Supplier, Retailer
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      The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 1/2'-10'). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.
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    • calendar Member Since 7 Years
    • building Nature of Business Retailer

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