CA762171A - Roof supporting systems for mine workings - Google Patents

Roof supporting systems for mine workings

Info

Publication number
CA762171A
CA762171A CA762171A CA762171DA CA762171A CA 762171 A CA762171 A CA 762171A CA 762171 A CA762171 A CA 762171A CA 762171D A CA762171D A CA 762171DA CA 762171 A CA762171 A CA 762171A
Authority
CA
Canada
Prior art keywords
roof supporting
mine workings
supporting systems
systems
workings
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
CA762171A
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 CA762171A publication Critical patent/CA762171A/en
Expired legal-status Critical Current

Links

CA762171A Roof supporting systems for mine workings Expired CA762171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA762171T

Publications (1)

Publication Number Publication Date
CA762171A true CA762171A (en) 1967-07-04

Family

ID=36199295

Family Applications (1)

Application Number Title Priority Date Filing Date
CA762171A Expired CA762171A (en) Roof supporting systems for mine workings

Country Status (1)

Country Link
CA (1) CA762171A (en)

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