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  • www.roschenmining.com
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Roschen Group Ltd is a world class manufacturer of down-the-hole (DTH) drilling equipment - DTH hammers, drill bits and casing systems, Drill pipe, Tricone bits, PDC Bit, wireline exploration core drilling, etc... ROSCHEN DTH hammers deliver..
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  • roschenconsulting.com
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Ethan Roschen officially started his construction consulting business in 2018. Although he has been consulting and building large commercial and residential projects for over 38 years in Northern California. He has and continues to have the..
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