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FR906298A - Method and device for the construction, in mines, of interior cavities in which it is a question of using machines for the extraction of coal - Google Patents

Method and device for the construction, in mines, of interior cavities in which it is a question of using machines for the extraction of coal

Info

Publication number
FR906298A
FR906298A FR906298DA FR906298A FR 906298 A FR906298 A FR 906298A FR 906298D A FR906298D A FR 906298DA FR 906298 A FR906298 A FR 906298A
Authority
FR
France
Prior art keywords
mines
coal
question
machines
extraction
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 FR906298A publication Critical patent/FR906298A/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
    • E21D17/04—Cantilever extension or similar protecting devices for use in longwall working
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0056—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with individual advancing shifting devices

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)
FR906298D 1943-06-11 1944-08-04 Method and device for the construction, in mines, of interior cavities in which it is a question of using machines for the extraction of coal Expired FR906298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE906298X 1943-06-11

Publications (1)

Publication Number Publication Date
FR906298A true FR906298A (en) 1945-12-28

Family

ID=6862670

Family Applications (1)

Application Number Title Priority Date Filing Date
FR906298D Expired FR906298A (en) 1943-06-11 1944-08-04 Method and device for the construction, in mines, of interior cavities in which it is a question of using machines for the extraction of coal

Country Status (1)

Country Link
FR (1) FR906298A (en)

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