CA758322A - Roof supports for mine workings - Google Patents

Roof supports for mine workings

Info

Publication number
CA758322A
CA758322A CA758322A CA758322DA CA758322A CA 758322 A CA758322 A CA 758322A CA 758322 A CA758322 A CA 758322A CA 758322D A CA758322D A CA 758322DA CA 758322 A CA758322 A CA 758322A
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
CA758322A
Inventor
M. Groetschel Karl
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 CA758322A publication Critical patent/CA758322A/en
Expired legal-status Critical Current

Links

CA758322A Roof supports for mine workings Expired CA758322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA758322T

Publications (1)

Publication Number Publication Date
CA758322A true CA758322A (en) 1967-05-09

Family

ID=36195428

Family Applications (1)

Application Number Title Priority Date Filing Date
CA758322A Expired CA758322A (en) Roof supports for mine workings

Country Status (1)

Country Link
CA (1) CA758322A (en)

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