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Bergbau
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keywords:(Bergbau)
A letter to a commissioner of the inland navigation : concerning the Tyrone collieries
Report of the Hollidaysburg and Bennington Railroad & Mining Company
Report to the directors of the Pequa Railroad and Improvement Company
Pequa Rail Road and Improvement Company : act of incorporation, by-laws, &c
Some notes on the bord-and-pillar system of work
Gobbin quarry and railway at the Saint-Etienne collieries
South African rope and safety-catch commission
Magmatic segregation in its relation to the genesis of certain ore-bodies
State provisions for location of lode claims
Mineral resources on Kansas City, Mexico and Orient railway
Mule-back transportation of sectionalized machinery
The steam tractor hauling ore in Washington
A means of securing main haulage roads and return airways of a mine otherwise than with timber
Gathering without animals locomotives or conveyors
With hand shoveling 10 tons per man and 26 tons per loader already attained
With mechanical loading, cars can be manipulated if face be well shot and trips available
Safety problems in coal mining
Montana. The colstrip operation in Montana
Stoping methods in Michigan copper lodes
A haulage system with gathering locomotives only
A haulage system with gathering locomotives only
Wholesale first-aid training reduces mining accidents
In mine transportation good track plus planned haulage equals safety and efficiency
Prevention of accidents in collieries
The prevention of haulage accidents
Kentucky holds big first aid meet
Foremanship training proves good foundation for safety