CA339460A - Paroi de tunnel ou de puits - Google Patents

Paroi de tunnel ou de puits

Info

Publication number
CA339460A
CA339460A CA339460A CA339460DA CA339460A CA 339460 A CA339460 A CA 339460A CA 339460 A CA339460 A CA 339460A CA 339460D A CA339460D A CA 339460DA CA 339460 A CA339460 A CA 339460A
Authority
CA
Canada
Prior art keywords
tunnel
shaft wall
shaft
wall
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
CA339460A
Other languages
English (en)
Inventor
Malcolm Mcalpine Sir
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 CA339460A publication Critical patent/CA339460A/fr
Expired legal-status Critical Current

Links

CA339460A Paroi de tunnel ou de puits Expired CA339460A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA339460T

Publications (1)

Publication Number Publication Date
CA339460A true CA339460A (fr) 1934-02-20

Family

ID=35302601

Family Applications (1)

Application Number Title Priority Date Filing Date
CA339460A Expired CA339460A (fr) Paroi de tunnel ou de puits

Country Status (1)

Country Link
CA (1) CA339460A (fr)

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