"Prior to 1920 there was little attention paid to the general problem of breakage of rock drill steel. Each locality had its problem and the matter was treated as a purely local one, independent upon conditions in that particular section. But in the above-mentioned year, there arose an interest of wider scope, from what causes it is impossible to determine accurately, and the matter is now the subject of a broad investigation in which the users of rock drill steel, the United States Bureau of Mines, and the United States Bureau of Standards are cooperating...There is, to date, no satisfactory method for tabulating results from drill steel and computing the amount of breakage therefrom. Consequently, available records are, probably, in error, and the conclusions drawn therefrom are not to be relied upon too much. The fact that the above-mentioned investigation is calling forth an hitherto undisplayed interest, made it seem advisable to investigate one case of rock drill steel breakage more fully than had been done before"--Introduction, page 1.
Clayton, Charles Yancey, 1891-
Materials Science and Engineering
M.S. in Metallurgical Engineering
Missouri School of Mines and Metallurgy
iii, 37 pages, 9 plates
© 1923 Muir L. Frey, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Bits (Drilling and boring) -- Testing
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b2609434~S5
Frey, Muir Luken, "On the breakage of rock drill steel" (1923). Masters Theses. 4765.