Masters Theses

Abstract

"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.

Advisor(s)

Clayton, Charles Yancey, 1891-

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1923

Pagination

iii, 37 pages, 9 plates

Note about bibliography

Includes bibliographical references (pages 41-42).

Rights

© 1923 Muir L. Frey, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Bits (Drilling and boring) -- TestingRock-drills

Thesis Number

T 460

Print OCLC #

5955218

Electronic OCLC #

625036660

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Metallurgy Commons

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