FR1202304A - Improvements made to devices and processes for gradually digging slaughter corridors, more especially underground mining corridors - Google Patents

Improvements made to devices and processes for gradually digging slaughter corridors, more especially underground mining corridors

Info

Publication number
FR1202304A
FR1202304A FR1202304DA FR1202304A FR 1202304 A FR1202304 A FR 1202304A FR 1202304D A FR1202304D A FR 1202304DA FR 1202304 A FR1202304 A FR 1202304A
Authority
FR
France
Prior art keywords
corridors
slaughter
processes
devices
improvements made
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.)
BOCHUMER GES fur GRUBENAUSBAU
Original Assignee
BOCHUMER GES fur GRUBENAUSBAU
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 BOCHUMER GES fur GRUBENAUSBAU filed Critical BOCHUMER GES fur GRUBENAUSBAU
Application granted granted Critical
Publication of FR1202304A publication Critical patent/FR1202304A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E21D19/04—Provisional protective covers for working space for use in drifting galleries

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1202304D 1957-03-16 1958-03-14 Improvements made to devices and processes for gradually digging slaughter corridors, more especially underground mining corridors Expired FR1202304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1202304X 1957-03-16

Publications (1)

Publication Number Publication Date
FR1202304A true FR1202304A (en) 1960-01-08

Family

ID=19871674

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1202304D Expired FR1202304A (en) 1957-03-16 1958-03-14 Improvements made to devices and processes for gradually digging slaughter corridors, more especially underground mining corridors

Country Status (1)

Country Link
FR (1) FR1202304A (en)

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