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Apparatus for mine roof control |
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Portable derrick
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Mining installations
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Mineral mining installations
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Device for setting timbers and the like
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Oil well drilling apparatus having crown block movable lengthwise of mast
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Urządzenie rabunkowe i sposób zastosowania urządzenia rabunkowego do wyciągania sekcji obudowy zmechanizowanej
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Pacher et al.
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Semmering Base Tunnel Contract SBT2. 1 Tunnel Fröschnitzgraben–Creative solutions for complex shafts/Semmering‐Basistunnel Baulos SBT2. 1 Tunnel Fröschnitzgraben–Kreative Lösungen für komplexe Schachtbauwerke |
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Temporary roof support device and method
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Face conveyor with guide tube for planer haulage means
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Filling material stopping
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A scraper conveyor in a wall heading
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