CA872533A - Self-advancing mine roof supports - Google Patents

Self-advancing mine roof supports

Info

Publication number
CA872533A
CA872533A CA872533A CA872533DA CA872533A CA 872533 A CA872533 A CA 872533A CA 872533 A CA872533 A CA 872533A CA 872533D A CA872533D A CA 872533DA CA 872533 A CA872533 A CA 872533A
Authority
CA
Canada
Prior art keywords
self
mine roof
roof supports
advancing mine
advancing
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
CA872533A
Inventor
Ward Eric
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.)
Gullick Ltd
Original Assignee
Gullick Ltd
Publication date
Application granted granted Critical
Publication of CA872533A publication Critical patent/CA872533A/en
Expired legal-status Critical Current

Links

CA872533A Self-advancing mine roof supports Expired CA872533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA872533T

Publications (1)

Publication Number Publication Date
CA872533A true CA872533A (en) 1971-06-08

Family

ID=36358516

Family Applications (1)

Application Number Title Priority Date Filing Date
CA872533A Expired CA872533A (en) Self-advancing mine roof supports

Country Status (1)

Country Link
CA (1) CA872533A (en)

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