Masters Theses


"Many years of practice have resulted in the standardization of several types of scrapers which are now commonly manufactured for use in mining. Although experience has brought out much information on scraping operations, no systematic studies of the efficiency of mine scrapers have been carried out before the experimental works done in the last few years at Missouri School of Mines and Metallurgy. "Purpose of Problem": The purpose of this present study is to consider the effect which moisture in the muck has on the efficiency as regards power consumption and amount of material scraped, of different types of mine scrapers. Scraper weight, rope speed, and moisture content were the variables considered for each scraper type. "Problem Procedure": Two kinds of scrapers were tested, namely: The box scraper and the crescent scraper. They were available in the mining laboratory. The model scrapers were constructed at a scale of 1 to 6. A small electrically-driven hoist was used to pull the buckets on a 15 foot-long table. A Westinghouse watt-meter connected with the electric motor graphically recorded the power consumed. The weight of material scraped after a given number of passes was determined. The power consumed was computed from the graphic registration of the wattmeter"--Introduction, page 1-2.


Forrester, James Donald, 1906-1979


Mining and Nuclear Engineering

Degree Name

M.S. in Mining Engineering


Missouri School of Mines and Metallurgy

Publication Date



iv, 62 pages

Note about bibliography

Includes bibliographical references (leaves 93-94).


© 1950 Georges J. Vigier, All rights reserved.

Document Type

Thesis - Open Access

File Type




Library of Congress Subject Headings

Scrapers (Earthmoving machinery)
Scrapers (Earthmoving machinery) -- Energy consumption

Thesis Number

T 872

Print OCLC #


Electronic OCLC #