CA830735A - Tunnelling shields and methods of tunnelling - Google Patents

Tunnelling shields and methods of tunnelling

Info

Publication number
CA830735A
CA830735A CA830735A CA830735DA CA830735A CA 830735 A CA830735 A CA 830735A CA 830735 A CA830735 A CA 830735A CA 830735D A CA830735D A CA 830735DA CA 830735 A CA830735 A CA 830735A
Authority
CA
Canada
Prior art keywords
tunnelling
methods
shields
tunnelling shields
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
CA830735A
Inventor
V. Bartlett John
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 CA830735A publication Critical patent/CA830735A/en
Expired legal-status Critical Current

Links

CA830735A Tunnelling shields and methods of tunnelling Expired CA830735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA830735T

Publications (1)

Publication Number Publication Date
CA830735A true CA830735A (en) 1969-12-30

Family

ID=36308197

Family Applications (1)

Application Number Title Priority Date Filing Date
CA830735A Expired CA830735A (en) Tunnelling shields and methods of tunnelling

Country Status (1)

Country Link
CA (1) CA830735A (en)

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