Sullivan diamond core drills

by Sullivan Machinery Company

Specification for rotary core drilling equipment

by British Standards Institution.

ICE CORE DRILLING

Diamond core drilling

by Svenska Diamantbergborrnings AB.

Basic procedures of core drilling

by Acker Drill Company, inc.

Core Drilling in Nova Scotia with Government Drills

by Nova Scotia. Dept. of Public Works and Mines.

Core drills for prospecting, testing, blasting, etc

by McKiernan-Terry Drill Co

Core drilling in Nova Scotia with government drills

by Nova Scotia. Dept. of Mines.

Core drilling and analysis

by Kenneth M. Campbell

Catalogue of Sullivan diamond prospecting core drills and ro...

by Diamond Prospecting Co

Description of Beal's patent core drill!

by Beal Mining Core Drill Co

Core drilling through the Antarctic ice sheet

by Herbert T. Ueda

Catalogue of Sullivan diamond prospecting core drills

by Chicago. [from old catalog] Diamond prospecting company

Core Drills for Developing Football Punting Skills

by Bill Renner

Core Drills for Developing Football Kicking Skills

by Bill Renner

Core Drilling For Industrial Minerals in Saskatchewan 1948-1...

by Saskatchewan. Dept. of Mineral Resources. Industrial Minerals Research Branch.

Core Drilling For Industrial Minerals in Saskatchewan 1953-1...

by Saskatchewan. Dept. of Mineral Resources. Industrial Minerals Research Branch.

Ice-core drilling

by John F. Splettstoesser

Beal's patent core drill!

by Beal Mining Core Drill Co

Catalogue of Sullivan diamond prospecting core drills and qu...

by Diamond Prospecting Co