BE452847A - - Google Patents

Info

Publication number
BE452847A
BE452847A BE452847DA BE452847A BE 452847 A BE452847 A BE 452847A BE 452847D A BE452847D A BE 452847DA BE 452847 A BE452847 A BE 452847A
Authority
BE
Belgium
Prior art keywords
support
tenon
prop
beams
head
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE452847A publication Critical patent/BE452847A/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section

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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
BE452847D BE452847A (cg-RX-API-DMAC7.html)

Publications (1)

Publication Number Publication Date
BE452847A true BE452847A (cg-RX-API-DMAC7.html)

Family

ID=107375

Family Applications (1)

Application Number Title Priority Date Filing Date
BE452847D BE452847A (cg-RX-API-DMAC7.html)

Country Status (1)

Country Link
BE (1) BE452847A (cg-RX-API-DMAC7.html)

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