CA945768A - Method and apparatus for advancing tunnel supports - Google Patents

Method and apparatus for advancing tunnel supports

Info

Publication number
CA945768A
CA945768A CA109,936A CA109936A CA945768A CA 945768 A CA945768 A CA 945768A CA 109936 A CA109936 A CA 109936A CA 945768 A CA945768 A CA 945768A
Authority
CA
Canada
Prior art keywords
tunnel supports
advancing tunnel
advancing
supports
tunnel
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
CA109,936A
Other versions
CA109936S (en
Inventor
J. Donovan Jacobs
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
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 Individual filed Critical Individual
Priority to CA109,936A priority Critical patent/CA945768A/en
Application granted granted Critical
Publication of CA945768A publication Critical patent/CA945768A/en
Expired legal-status Critical Current

Links

CA109,936A 1971-04-08 1971-04-08 Method and apparatus for advancing tunnel supports Expired CA945768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA109,936A CA945768A (en) 1971-04-08 1971-04-08 Method and apparatus for advancing tunnel supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA109,936A CA945768A (en) 1971-04-08 1971-04-08 Method and apparatus for advancing tunnel supports

Publications (1)

Publication Number Publication Date
CA945768A true CA945768A (en) 1974-04-23

Family

ID=4089315

Family Applications (1)

Application Number Title Priority Date Filing Date
CA109,936A Expired CA945768A (en) 1971-04-08 1971-04-08 Method and apparatus for advancing tunnel supports

Country Status (1)

Country Link
CA (1) CA945768A (en)

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