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Bergbau
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keywords:(Bergbau)
A letter to a commissioner of the inland navigation : concerning the Tyrone collieries
Projet de décret sur les salines et salins nationaux
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
Le Congrès Socialiste de Stuttgart
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
Comparison of horse and benzine-locomotive haulage
The introduction of automobiles for mining work
Mule-back transportation of sectionalized machinery
An automatic signal system for crossovers on underground railways operated by electric locomotives
Switches for underground electric locomotive traction
The steam tractor hauling ore in Washington
A means of securing main haulage roads and return airways of a mine otherwise than with timber
Wirtschafts-statistisches Handbuch für Sowjetrußland
Gathering without animals locomotives or conveyors