Rock bolts for mining and tunnel support; general specifications for steel-bolts; tests, testing methods
€48.79
Rock drilling equipment; terminology
€56.17
Hammer drilling; connecting tap for hammer drilling support
€24.39
Roof bolt plates for mining and tunnel support
Longwall shearing and heading machines; shanks of cutting tools and their assembly openings
Rails for mine supports
€34.30
Round pit timber; pillar, supports
Round pit timber; bolts
Sawn pit timber; boards, planks and square-sawn timber for working platforms
Round pit timber; load bearing capacity of props and bars; calculation
Pneumatic stowing pipes
Mine cars; large size; dimensions, design and construction
Sawn pit timber; boards and planks
Mine cars; middle size; dimensions, design and construction
Pick hammers; flat- and shearpick without and with shank
