FR730085A - étai de mine - Google Patents

étai de mine

Info

Publication number
FR730085A
FR730085A FR730085DA FR730085A FR 730085 A FR730085 A FR 730085A FR 730085D A FR730085D A FR 730085DA FR 730085 A FR730085 A FR 730085A
Authority
FR
France
Prior art keywords
mine prop
prop
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
English (en)
Inventor
William Reid
Robert Harkness Reid
William Reid Junior
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 FR730085A publication Critical patent/FR730085A/fr
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
    • E21D15/02—Non-telescopic props
    • E21D15/06—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
    • E21D15/12—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with locking devices located near head or foot

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)
FR730085D 1930-12-15 1931-12-14 étai de mine Expired FR730085A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB730085X 1930-12-15

Publications (1)

Publication Number Publication Date
FR730085A true FR730085A (fr) 1932-08-05

Family

ID=10495460

Family Applications (1)

Application Number Title Priority Date Filing Date
FR730085D Expired FR730085A (fr) 1930-12-15 1931-12-14 étai de mine

Country Status (1)

Country Link
FR (1) FR730085A (fr)

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