Book
total rows: 2
page: 1
records each page: 20

http://103.67.78.195/index.php
name: Diamomd 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
author: G. A. Denny
date created: 1900

Diamond drilling terms and equipment standards
author: Boyles Operations
publisher: Boyles Operations
date created: 1970