CA766473A - Roof supports for mine workings - Google Patents

Roof supports for mine workings

Info

Publication number
CA766473A
CA766473A CA766473A CA766473DA CA766473A CA 766473 A CA766473 A CA 766473A CA 766473 A CA766473 A CA 766473A CA 766473D A CA766473D A CA 766473DA CA 766473 A CA766473 A CA 766473A
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
CA766473A
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 CA766473A publication Critical patent/CA766473A/en
Expired legal-status Critical Current

Links

CA766473A Roof supports for mine workings Expired CA766473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA766473T

Publications (1)

Publication Number Publication Date
CA766473A true CA766473A (en) 1967-09-05

Family

ID=36209886

Family Applications (1)

Application Number Title Priority Date Filing Date
CA766473A Expired CA766473A (en) Roof supports for mine workings

Country Status (1)

Country Link
CA (1) CA766473A (en)

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