BE625684A - - Google Patents

Info

Publication number
BE625684A
BE625684A BE625684DA BE625684A BE 625684 A BE625684 A BE 625684A BE 625684D A BE625684D A BE 625684DA BE 625684 A BE625684 A BE 625684A
Authority
BE
Belgium
Prior art keywords
unit
support
desc
clms page
page number
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE625684A publication Critical patent/BE625684A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
BE625684D BE625684A (de)

Publications (1)

Publication Number Publication Date
BE625684A true BE625684A (de)

Family

ID=196799

Family Applications (1)

Application Number Title Priority Date Filing Date
BE625684D BE625684A (de)

Country Status (1)

Country Link
BE (1) BE625684A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344610A (en) * 1964-04-21 1967-10-03 Gewerk Eisenhuette Westfalia Self-traveling propping apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344610A (en) * 1964-04-21 1967-10-03 Gewerk Eisenhuette Westfalia Self-traveling propping apparatus

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