Economic benefits of systematic roof bolting in Ziegler No. 3 Mine, Bell & Zoller Coal & Mining Co., Williamson County, Ill. Buy on Amazon

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Economic benefits of systematic roof bolting in Ziegler No. 3 Mine, Bell & Zoller Coal & Mining Co., Williamson County, Ill.

Book Details

Author(s)L. W. Kelly
ISBN / ASINB003HKQQFS
ISBN-13978B003HKQQF9
MarketplaceIndia  🇮🇳
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