CA313926A - Methode et appareil a tunnels dans le roc - Google Patents

Methode et appareil a tunnels dans le roc

Info

Publication number
CA313926A
CA313926A CA313926A CA313926DA CA313926A CA 313926 A CA313926 A CA 313926A CA 313926 A CA313926 A CA 313926A CA 313926D A CA313926D A CA 313926DA CA 313926 A CA313926 A CA 313926A
Authority
CA
Canada
Prior art keywords
tunnelling
rock
tunnelling rock
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
CA313926A
Other languages
English (en)
Inventor
J. O'rourke Daniel
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA313926A publication Critical patent/CA313926A/fr
Expired legal-status Critical Current

Links

CA313926A Methode et appareil a tunnels dans le roc Expired CA313926A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA313926T

Publications (1)

Publication Number Publication Date
CA313926A true CA313926A (fr) 1931-08-04

Family

ID=35273253

Family Applications (1)

Application Number Title Priority Date Filing Date
CA313926A Expired CA313926A (fr) Methode et appareil a tunnels dans le roc

Country Status (1)

Country Link
CA (1) CA313926A (fr)

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