FR1105953A - Improvements to retaining elements for mine galleries - Google Patents

Improvements to retaining elements for mine galleries

Info

Publication number
FR1105953A
FR1105953A FR1105953DA FR1105953A FR 1105953 A FR1105953 A FR 1105953A FR 1105953D A FR1105953D A FR 1105953DA FR 1105953 A FR1105953 A FR 1105953A
Authority
FR
France
Prior art keywords
retaining elements
mine galleries
galleries
mine
retaining
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)
Inventor
Gerhard Werner
Karl Idel
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 filed Critical
Application granted granted Critical
Publication of FR1105953A publication Critical patent/FR1105953A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor 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)
FR1105953D 1954-06-01 1954-06-01 Improvements to retaining elements for mine galleries Expired FR1105953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1105953T 1954-06-01

Publications (1)

Publication Number Publication Date
FR1105953A true FR1105953A (en) 1955-12-09

Family

ID=9623674

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1105953D Expired FR1105953A (en) 1954-06-01 1954-06-01 Improvements to retaining elements for mine galleries

Country Status (1)

Country Link
FR (1) FR1105953A (en)

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