FR976149A - mine prop, iron, two-piece - Google Patents

mine prop, iron, two-piece

Info

Publication number
FR976149A
FR976149A FR976149DA FR976149A FR 976149 A FR976149 A FR 976149A FR 976149D A FR976149D A FR 976149DA FR 976149 A FR976149 A FR 976149A
Authority
FR
France
Prior art keywords
iron
piece
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
French (fr)
Inventor
Hans Gerlach
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 FR976149A publication Critical patent/FR976149A/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
    • E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section

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)
FR976149D 1948-09-29 1948-09-29 mine prop, iron, two-piece Expired FR976149A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR976149T 1948-09-29

Publications (1)

Publication Number Publication Date
FR976149A true FR976149A (en) 1951-03-14

Family

ID=9518606

Family Applications (1)

Application Number Title Priority Date Filing Date
FR976149D Expired FR976149A (en) 1948-09-29 1948-09-29 mine prop, iron, two-piece

Country Status (1)

Country Link
FR (1) FR976149A (en)

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