"This paper describes a comparative study which was made of the wear and efficiency of different types of rock-drill bits when used under various drilling conditions...The four types of experiments which were carried out had the following purposes: 1. Determine the influence of the size of the bit. 2. Determine the influence of the design of the bit. 3. Determine the influence of the type of hammer. 4. Compare the performances of steel and tungsten carbide bits in limestone and in granite"--Introduction, page 1.
Forrester, James Donald, 1906-1979
M.S. in Mining Engineering
Missouri School of Mines and Metallurgy
vi, 90 pages
© 1948 Paul Louis P. Terrasson, All rights reserved.
Thesis - Open Access
Bits (Drilling and boring) -- Testing
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Terrasson, Paul Louis, "A comparative study of some rock drill bits" (1948). Masters Theses. 6752.