Add to ORKGIn 1917 the miners at the Isle Royale Copper Company\u27s mines were constantly complaining about poor drills and an investigation was made to discover any reasons for the complaint --page 1
A thesis submitted to the Department of Mining Engineering and the Faculty of the Graduate School ...
During the years 1912 to 1915 the writer had charge of the Ruby Copper Company property near Patagon...
The fluorspar-zinc orebody at Minerva No. 1 mine near Cave in Rock, in Hardin County, Illinois, woul...
In 1917 the miners at the Isle Royale Copper Company\u27s mines were constantly complaining about po...
Several brands of standard grade drill steel were obtained [and tested] --page 1
The object of this thesis is an attempt to determine the relative efficiency of rock drill bits. The...
Mining operations of the zinc and lead deposits of Southwest Missouri, Southeast Kansas and Northeas...
This mine, which is located about 3-1/2 miles southeast of Sullivan in the extreme northeast corner ...
In the fall of 1901, the writer was engaged by the Republic Coal Mining Company of Aurora Springs, M...
The name of this thesis is suggestive of its character. The writer has endeavored to resent in a gen...
As an introduction to this thesis, it would probably be well to give the laws of the State of Illino...
The object of this thesis is to investigate the different shapes of bits in rock drilling. My intent...
Mining began at the Iron Ridge Mine (now commonly called Neda Mine) in 1849. The ore is relatively c...
The aim of this thesis is an attempt to determine the relative efficiency, of four standard types of...
This thesis embodies the results of an investigation, by the time study method, of certain phases of...
A thesis submitted to the Department of Mining Engineering and the Faculty of the Graduate School ...
During the years 1912 to 1915 the writer had charge of the Ruby Copper Company property near Patagon...
The fluorspar-zinc orebody at Minerva No. 1 mine near Cave in Rock, in Hardin County, Illinois, woul...
In 1917 the miners at the Isle Royale Copper Company\u27s mines were constantly complaining about po...
Several brands of standard grade drill steel were obtained [and tested] --page 1
The object of this thesis is an attempt to determine the relative efficiency of rock drill bits. The...
Mining operations of the zinc and lead deposits of Southwest Missouri, Southeast Kansas and Northeas...
This mine, which is located about 3-1/2 miles southeast of Sullivan in the extreme northeast corner ...
In the fall of 1901, the writer was engaged by the Republic Coal Mining Company of Aurora Springs, M...
The name of this thesis is suggestive of its character. The writer has endeavored to resent in a gen...
As an introduction to this thesis, it would probably be well to give the laws of the State of Illino...
The object of this thesis is to investigate the different shapes of bits in rock drilling. My intent...
Mining began at the Iron Ridge Mine (now commonly called Neda Mine) in 1849. The ore is relatively c...
The aim of this thesis is an attempt to determine the relative efficiency, of four standard types of...
This thesis embodies the results of an investigation, by the time study method, of certain phases of...
A thesis submitted to the Department of Mining Engineering and the Faculty of the Graduate School ...
During the years 1912 to 1915 the writer had charge of the Ruby Copper Company property near Patagon...
The fluorspar-zinc orebody at Minerva No. 1 mine near Cave in Rock, in Hardin County, Illinois, woul...