FR861608A - Method and apparatus for making underground passages - Google Patents

Method and apparatus for making underground passages

Info

Publication number
FR861608A
FR861608A FR861608DA FR861608A FR 861608 A FR861608 A FR 861608A FR 861608D A FR861608D A FR 861608DA FR 861608 A FR861608 A FR 861608A
Authority
FR
France
Prior art keywords
underground passages
making underground
making
passages
underground
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.)
ENTPR FOUGEROLLE
Original Assignee
ENTPR FOUGEROLLE
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 ENTPR FOUGEROLLE filed Critical ENTPR FOUGEROLLE
Application granted granted Critical
Publication of FR861608A publication Critical patent/FR861608A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR861608D 1939-07-27 1939-07-27 Method and apparatus for making underground passages Expired FR861608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861608T 1939-07-27

Publications (1)

Publication Number Publication Date
FR861608A true FR861608A (en) 1941-02-13

Family

ID=9340971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861608D Expired FR861608A (en) 1939-07-27 1939-07-27 Method and apparatus for making underground passages

Country Status (1)

Country Link
FR (1) FR861608A (en)

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