AbstractsEarth & Environmental Science

Tests of rock drill bits for Water-Leyner machine

by Riley Marsh Simrall




Institution: Missouri University of Science and Technology
Department:
Year: 1914
Record ID: 1515690
Full text PDF: http://hdl.handle.net/10355/17667


Abstract

"The above investigation was made in the Mining Laboratory of the Missouri School of Mines, under the direction of Prof. C. R. Forbes, with the following object in view: To make comparative tests of various types of regular and special bits for the Water-Leyner machine as to drilling speed and total distance drilled by each bit without resharpening" – Introduction, p. [2].