CA499683A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
CA499683A
CA499683A CA499683A CA499683DA CA499683A CA 499683 A CA499683 A CA 499683A CA 499683 A CA499683 A CA 499683A CA 499683D A CA499683D A CA 499683DA CA 499683 A CA499683 A CA 499683A
Authority
CA
Canada
Prior art keywords
mine roof
roof supports
supports
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
CA499683A
Other languages
French (fr)
Inventor
N. Knights Richard
M. Frye Colin
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.)
Dowty Equipment Ltd
Original Assignee
Dowty Equipment Ltd
Publication date
Application granted granted Critical
Publication of CA499683A publication Critical patent/CA499683A/en
Expired legal-status Critical Current

Links

CA499683A Mine roof supports Expired CA499683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA499683T

Publications (1)

Publication Number Publication Date
CA499683A true CA499683A (en) 1954-02-02

Family

ID=35645130

Family Applications (1)

Application Number Title Priority Date Filing Date
CA499683A Expired CA499683A (en) Mine roof supports

Country Status (1)

Country Link
CA (1) CA499683A (en)

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