CA745382A - Supporting elements for mine roofs - Google Patents

Supporting elements for mine roofs

Info

Publication number
CA745382A
CA745382A CA745382A CA745382DA CA745382A CA 745382 A CA745382 A CA 745382A CA 745382 A CA745382 A CA 745382A CA 745382D A CA745382D A CA 745382DA CA 745382 A CA745382 A CA 745382A
Authority
CA
Canada
Prior art keywords
supporting elements
mine roofs
roofs
mine
supporting
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
CA745382A
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 CA745382A publication Critical patent/CA745382A/en
Expired legal-status Critical Current

Links

CA745382A Supporting elements for mine roofs Expired CA745382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA745382T

Publications (1)

Publication Number Publication Date
CA745382A true CA745382A (en) 1966-11-01

Family

ID=36174586

Family Applications (1)

Application Number Title Priority Date Filing Date
CA745382A Expired CA745382A (en) Supporting elements for mine roofs

Country Status (1)

Country Link
CA (1) CA745382A (en)

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