FR968622A - Pillar for caving - Google Patents

Pillar for caving

Info

Publication number
FR968622A
FR968622A FR968622DA FR968622A FR 968622 A FR968622 A FR 968622A FR 968622D A FR968622D A FR 968622DA FR 968622 A FR968622 A FR 968622A
Authority
FR
France
Prior art keywords
caving
pillar
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
Jean Sabes
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 FR968622A publication Critical patent/FR968622A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks

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)
FR968622D 1948-06-28 1948-06-28 Pillar for caving Expired FR968622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR968622T 1948-06-28

Publications (1)

Publication Number Publication Date
FR968622A true FR968622A (en) 1950-12-01

Family

ID=9501451

Family Applications (1)

Application Number Title Priority Date Filing Date
FR968622D Expired FR968622A (en) 1948-06-28 1948-06-28 Pillar for caving

Country Status (1)

Country Link
FR (1) FR968622A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893679A (en) * 1955-10-07 1959-07-07 Mining Engineering Co Ltd Chock release

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893679A (en) * 1955-10-07 1959-07-07 Mining Engineering Co Ltd Chock release

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