Tests of rock drill bits for Water-Leyner machine
Institution: | Missouri University of Science and Technology |
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Department: | |
Year: | 1914 |
Record ID: | 1515690 |
Full text PDF: | http://hdl.handle.net/10355/17667 |
"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].