FR768108A - Perfectionnements aux étais de mines - Google Patents

Perfectionnements aux étais de mines

Info

Publication number
FR768108A
FR768108A FR768108DA FR768108A FR 768108 A FR768108 A FR 768108A FR 768108D A FR768108D A FR 768108DA FR 768108 A FR768108 A FR 768108A
Authority
FR
France
Prior art keywords
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
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 FR768108A publication Critical patent/FR768108A/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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/581—Devices for setting props or chocks in which the props are pre- loaded

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)
FR768108D 1933-02-03 1934-02-03 Perfectionnements aux étais de mines Expired FR768108A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB768108X 1933-02-03

Publications (1)

Publication Number Publication Date
FR768108A true FR768108A (fr) 1934-07-31

Family

ID=10497128

Family Applications (1)

Application Number Title Priority Date Filing Date
FR768108D Expired FR768108A (fr) 1933-02-03 1934-02-03 Perfectionnements aux étais de mines

Country Status (1)

Country Link
FR (1) FR768108A (fr)

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