CA669699A - Roof supports for mine workings - Google Patents

Roof supports for mine workings

Info

Publication number
CA669699A
CA669699A CA669699A CA669699DA CA669699A CA 669699 A CA669699 A CA 669699A CA 669699 A CA669699 A CA 669699A CA 669699D A CA669699D A CA 669699DA CA 669699 A CA669699 A CA 669699A
Authority
CA
Canada
Prior art keywords
roof supports
mine workings
workings
mine
roof
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
CA669699A
Inventor
W. Duncan Angus
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.)
Mining Engineering Co Ltd MECO
Original Assignee
Mining Engineering Co Ltd MECO
Publication date
Application granted granted Critical
Publication of CA669699A publication Critical patent/CA669699A/en
Expired legal-status Critical Current

Links

CA669699A Roof supports for mine workings Expired CA669699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA669699T

Publications (1)

Publication Number Publication Date
CA669699A true CA669699A (en) 1963-09-03

Family

ID=35970042

Family Applications (1)

Application Number Title Priority Date Filing Date
CA669699A Expired CA669699A (en) Roof supports for mine workings

Country Status (1)

Country Link
CA (1) CA669699A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978675A (en) * 1974-01-29 1976-09-07 Coal Industry (Patents) Limited Mine roof support equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978675A (en) * 1974-01-29 1976-09-07 Coal Industry (Patents) Limited Mine roof support equipment

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