FR827440A - Effondreur pour mines - Google Patents

Effondreur pour mines

Info

Publication number
FR827440A
FR827440A FR827440DA FR827440A FR 827440 A FR827440 A FR 827440A FR 827440D A FR827440D A FR 827440DA FR 827440 A FR827440 A FR 827440A
Authority
FR
France
Prior art keywords
mine
collector
mine collector
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
English (en)
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.)
LE TUBE FACONNE
Original Assignee
LE TUBE FACONNE
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 LE TUBE FACONNE filed Critical LE TUBE FACONNE
Application granted granted Critical
Publication of FR827440A publication Critical patent/FR827440A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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)
FR827440D 1937-10-02 1937-10-02 Effondreur pour mines Expired FR827440A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR827440T 1937-10-02

Publications (1)

Publication Number Publication Date
FR827440A true FR827440A (fr) 1938-04-26

Family

ID=9283316

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827440D Expired FR827440A (fr) 1937-10-02 1937-10-02 Effondreur pour mines

Country Status (1)

Country Link
FR (1) FR827440A (fr)

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