CA834435A - Roof supports for mine workings - Google Patents

Roof supports for mine workings

Info

Publication number
CA834435A
CA834435A CA834435A CA834435DA CA834435A CA 834435 A CA834435 A CA 834435A CA 834435 A CA834435 A CA 834435A CA 834435D A CA834435D A CA 834435DA CA 834435 A CA834435 A CA 834435A
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
CA834435A
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 CA834435A publication Critical patent/CA834435A/en
Expired legal-status Critical Current

Links

CA834435A Roof supports for mine workings Expired CA834435A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA834435T

Publications (1)

Publication Number Publication Date
CA834435A true CA834435A (en) 1970-02-17

Family

ID=36311891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA834435A Expired CA834435A (en) Roof supports for mine workings

Country Status (1)

Country Link
CA (1) CA834435A (en)

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