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Device for replacing conveyer belts
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Sinking structure and method of its erection
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Hillside drill
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Coulter drill
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Draining layer in the base of embankment
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Method of formation of multilayer dumps
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Arrangement for airing open mines
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Planking for railway crossing
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Device for measuring slopes
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Device for monitoring operation of excavating machine
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Arrangement for cleaning conveyer belt
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Device for closing the opening for the passage of rope in a building with hoisting machines
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Arrangement for preventing a vehicle running off an embankment
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SU912836A1
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Method of driving a sinkable well into soil
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Device for fixing conductors in shaft
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Expansion joint of box-shaped duct of mine hoist
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Method of mounting conductors in shaft
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Compensator for length of box conductor of mine lift
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Method and apparatus for placing conductors in mine shaft
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Mine shaft guide length compensator
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