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Cable joint
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PL276417A1
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Method and device for leading the heading machine leads
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Assembling station for self-advancing roof supports
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Method of replacing used components of mine shaft lining
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Light-weight self-advancing roof-support
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PL272980A1
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Driver conveyor
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PL271644A1
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Hydraulic supply station
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Device for testing test instruments
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DE3710839A1
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METHOD OF MOVING THE STRAIN SPACES AND DAM FOR THE TRANSFER OF SPREAD SPACES
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Method of protecting dog headings against dynamic loads
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PL257424A1
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Method of determining serviceability of a windlass braking system and device therefor
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PL257423A1
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Method of supporting roofs of mutually crossing dog headings
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PL257425A1
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Grip for manually handling lining net
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Apparatus for securing a prop to its associated extendable roof cap
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Extendable cap for a light-weight self advancing roof support
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PL256422A1
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Method of grinding in faying surfaces of valve plates and seats and apparatus therefor
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PL256246A1
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Air stopping
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PL256210A1
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Apparatus for winding up a conveyor belt
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PL255866A1
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Method of obtaining carbonaceous mouldin powders
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PL255651A1
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Ambient temperature change indicating device
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