BE497327A - - Google Patents

Info

Publication number
BE497327A
BE497327A BE497327DA BE497327A BE 497327 A BE497327 A BE 497327A BE 497327D A BE497327D A BE 497327DA BE 497327 A BE497327 A BE 497327A
Authority
BE
Belgium
Prior art keywords
extension
prop
driving end
shoe
mine
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE497327A publication Critical patent/BE497327A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50Component parts or details of props
    • E21D15/52Extensible units located above or below standard props

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
BE497327D BE497327A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE497327A true BE497327A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=140324

Family Applications (1)

Application Number Title Priority Date Filing Date
BE497327D BE497327A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE497327A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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