Add to ORKGThe purpose of this investigation is to compare the relative cutting speeds and efficiency of some of the different types of rock drill bits used in the piston machine, including the regular cross bit, the low center cross bit, a so-called flat cross bit, the Z bit of the southeast Missouri type, and the Joplin Bull bit --page 2
Tyt. z nagłówka.Bibliogr. s. [147].In the article, there has been described results of the statistic...
none3The paper analyzes the recent technological developments of bits utilized to drill hard and abr...
Development of laboratory rock breakage techniques to relate energy and surface area produced by slo...
The aim of this thesis is an attempt to determine the relative efficiency, of four standard types of...
The object of this thesis is an attempt to determine the relative efficiency of rock drill bits. The...
Electro hydraulic drillers have been widely used in mining for drilling and roof-bolting. In the dri...
The object of this thesis is to investigate the different shapes of bits in rock drilling. My intent...
Electro-hydraulic and jumbo drills are commonly used for underground coal mines and tunnel drives fo...
"The Bureau of Mines conducted a series of ignition tests with two types of conical bits (plumb bob ...
This work investigates bit button wear and performance of Down-The Hole Hammer (DTH) drill in Navach...
Drilling and Blasting is a common technique of tunnel driving, either for mining or civil purposes, ...
Several brands of standard grade drill steel were obtained [and tested] --page 1
Drill bits having cutting edges formed of a matrix of sintered metal powder impregnated with diamond...
A drilling tool is the most important and highly loaded element of a drill rod which determines the ...
It is well accepted that the quality of soft clay samples obtained using standard fixed piston samp...
Tyt. z nagłówka.Bibliogr. s. [147].In the article, there has been described results of the statistic...
none3The paper analyzes the recent technological developments of bits utilized to drill hard and abr...
Development of laboratory rock breakage techniques to relate energy and surface area produced by slo...
The aim of this thesis is an attempt to determine the relative efficiency, of four standard types of...
The object of this thesis is an attempt to determine the relative efficiency of rock drill bits. The...
Electro hydraulic drillers have been widely used in mining for drilling and roof-bolting. In the dri...
The object of this thesis is to investigate the different shapes of bits in rock drilling. My intent...
Electro-hydraulic and jumbo drills are commonly used for underground coal mines and tunnel drives fo...
"The Bureau of Mines conducted a series of ignition tests with two types of conical bits (plumb bob ...
This work investigates bit button wear and performance of Down-The Hole Hammer (DTH) drill in Navach...
Drilling and Blasting is a common technique of tunnel driving, either for mining or civil purposes, ...
Several brands of standard grade drill steel were obtained [and tested] --page 1
Drill bits having cutting edges formed of a matrix of sintered metal powder impregnated with diamond...
A drilling tool is the most important and highly loaded element of a drill rod which determines the ...
It is well accepted that the quality of soft clay samples obtained using standard fixed piston samp...
Tyt. z nagłówka.Bibliogr. s. [147].In the article, there has been described results of the statistic...
none3The paper analyzes the recent technological developments of bits utilized to drill hard and abr...
Development of laboratory rock breakage techniques to relate energy and surface area produced by slo...