Improvements in congrude profile games and in a grooved shape, especially for coating, in the form of ring or arch of mining galleries (Machine-translation by Google Translate, not legally binding)
ES249106A3
Improvements in the mining periods of hydraulic action and procedure for its assembling300459 (Machine-translation by Google Translate, not legally binding)
ES249232A1
Improvements in the particularly stamped hydraulic stems for mines (Machine-translation by Google Translate, not legally binding)
DE1177586B
Rigid connection of segments of the pit lining
DE1077167B
Rigid connection of segments of the pit lining, in particular of arched segments of the line lining
DE1078968B
For test device that is used for relatively displaceably tensioned arch segments
DE1080798B
Rock pressure measuring device, especially for mine sections or similar spaces
DE1176083B
Rigid connection for butt against each other, consisting of web profiles segments of the arched or ring-shaped expansion, especially for routes in mining
DE1078066B
Rigid connection of butt against each other extension segments of the arched or ring-shaped route or shaft extension
DE1062651B
Rigid connection for butt against each other segments of the curved or ring-shaped expansion, especially for routes in mining
DE1063100B
Expansion for the end faces of chamber-like spaces in mining and tunnel construction, especially for side spaces in mine sections
DE1078413B
Process for forging tensioning straps for U-bolt connections for expansion frames, in particular for the expansion of pit lines
DE1184721B
Formwork frame for straight lines and shafts to be provided with concrete linings
DE1039969B
Pit stamp
GB860829A
An improved process and installation for the heat treatment of steel work pieces
DE1033609B
Reinforced, rigid ring expansion for pits, especially for short, particularly pressurized, disturbed sections of the route and for shafts as well as procedures for setting it up
GB859878A
A new or improved hydraulic pit prop
DE1063099B
Rigid connection of butt against each other expansion parts
DE1028060B
Tab connection for butt against each other segments of the arch or ring expansion, especially for pit sections
DE1209083B
Flexible arched or ring support composed of segments for underground mining
