FR1144670A - Improvement of caps for mine props - Google Patents

Improvement of caps for mine props

Info

Publication number
FR1144670A
FR1144670A FR1144670DA FR1144670A FR 1144670 A FR1144670 A FR 1144670A FR 1144670D A FR1144670D A FR 1144670DA FR 1144670 A FR1144670 A FR 1144670A
Authority
FR
France
Prior art keywords
caps
improvement
mine props
props
mine
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Application granted granted Critical
Publication of FR1144670A publication Critical patent/FR1144670A/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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props

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)
FR1144670D 1954-12-15 1955-12-15 Improvement of caps for mine props Expired FR1144670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1144670X 1954-12-15

Publications (1)

Publication Number Publication Date
FR1144670A true FR1144670A (en) 1957-10-16

Family

ID=10877454

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1144670D Expired FR1144670A (en) 1954-12-15 1955-12-15 Improvement of caps for mine props

Country Status (1)

Country Link
FR (1) FR1144670A (en)

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