CA760673A - Roof supports for mine workings - Google Patents

Roof supports for mine workings

Info

Publication number
CA760673A
CA760673A CA760673A CA760673DA CA760673A CA 760673 A CA760673 A CA 760673A CA 760673 A CA760673 A CA 760673A CA 760673D A CA760673D A CA 760673DA CA 760673 A CA760673 A CA 760673A
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
CA760673A
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 CA760673A publication Critical patent/CA760673A/en
Expired legal-status Critical Current

Links

CA760673A Roof supports for mine workings Expired CA760673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA760673T

Publications (1)

Publication Number Publication Date
CA760673A true CA760673A (en) 1967-06-13

Family

ID=36197782

Family Applications (1)

Application Number Title Priority Date Filing Date
CA760673A Expired CA760673A (en) Roof supports for mine workings

Country Status (1)

Country Link
CA (1) CA760673A (en)

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