CA332808A - Paroi de tunnel ou de puits - Google Patents

Paroi de tunnel ou de puits

Info

Publication number
CA332808A
CA332808A CA332808A CA332808DA CA332808A CA 332808 A CA332808 A CA 332808A CA 332808 A CA332808 A CA 332808A CA 332808D A CA332808D A CA 332808DA CA 332808 A CA332808 A CA 332808A
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
CA332808A
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 CA332808A publication Critical patent/CA332808A/fr
Expired legal-status Critical Current

Links

CA332808A Paroi de tunnel ou de puits Expired CA332808A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA332808T

Publications (1)

Publication Number Publication Date
CA332808A true CA332808A (fr) 1933-05-30

Family

ID=35295951

Family Applications (1)

Application Number Title Priority Date Filing Date
CA332808A Expired CA332808A (fr) Paroi de tunnel ou de puits

Country Status (1)

Country Link
CA (1) CA332808A (fr)

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