Diamond drilling for gold and other minerals

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Diamond Drilling For Gold And Other Minerals: A Practical Handbook On The Use Of Modern Diamond Core Drills In Prospecting And Exploiting Mineral-bearing Properties, Including Particulars Of The Cost Of Apparatus And Of Working

George Alfred Denny

C. Lockwood and son, 1900

Technology & Engineering; Mining; Boring; Rock-drills; Technology & Engineering / Mining