FR951477A - mine prop - Google Patents

mine prop

Info

Publication number
FR951477A
FR951477A FR951477DA FR951477A FR 951477 A FR951477 A FR 951477A FR 951477D A FR951477D A FR 951477DA FR 951477 A FR951477 A FR 951477A
Authority
FR
France
Prior art keywords
mine prop
prop
mine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gutehoffnungshutte Oberhausen AG
Original Assignee
Gutehoffnungshutte Oberhausen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gutehoffnungshutte Oberhausen AG filed Critical Gutehoffnungshutte Oberhausen AG
Application granted granted Critical
Publication of FR951477A publication Critical patent/FR951477A/en
Expired legal-status Critical Current

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
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type

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)
FR951477D 1942-04-09 1944-04-27 mine prop Expired FR951477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE951477X 1942-04-09

Publications (1)

Publication Number Publication Date
FR951477A true FR951477A (en) 1949-10-26

Family

ID=6918281

Family Applications (1)

Application Number Title Priority Date Filing Date
FR951477D Expired FR951477A (en) 1942-04-09 1944-04-27 mine prop

Country Status (1)

Country Link
FR (1) FR951477A (en)

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