FR1146841A - Support bolts for mines - Google Patents

Support bolts for mines

Info

Publication number
FR1146841A
FR1146841A FR1146841DA FR1146841A FR 1146841 A FR1146841 A FR 1146841A FR 1146841D A FR1146841D A FR 1146841DA FR 1146841 A FR1146841 A FR 1146841A
Authority
FR
France
Prior art keywords
mines
support bolts
bolts
support
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
Eugene-Leon-Marie Petitjean
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 FR1146841A publication Critical patent/FR1146841A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1146841D 1956-02-24 1956-02-24 Support bolts for mines Expired FR1146841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1146841T 1956-02-24

Publications (1)

Publication Number Publication Date
FR1146841A true FR1146841A (en) 1957-11-15

Family

ID=9645601

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1146841D Expired FR1146841A (en) 1956-02-24 1956-02-24 Support bolts for mines

Country Status (1)

Country Link
FR (1) FR1146841A (en)

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