CA639031A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
CA639031A
CA639031A CA639031A CA639031DA CA639031A CA 639031 A CA639031 A CA 639031A CA 639031 A CA639031 A CA 639031A CA 639031D A CA639031D A CA 639031DA CA 639031 A CA639031 A CA 639031A
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
CA639031A
Inventor
J. Launay Jean
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.)
Applications Scientifiques Techniques Industrielles Et Commerciales Astic (societe Anonyme Monegasque)
Original Assignee
Applications Scientifiques Techniques Industrielles Et Commerciales Astic (societe Anonyme Monegasque)
Publication date
Application granted granted Critical
Publication of CA639031A publication Critical patent/CA639031A/en
Expired legal-status Critical Current

Links

CA639031A Mine roof supports Expired CA639031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA639031T

Publications (1)

Publication Number Publication Date
CA639031A true CA639031A (en) 1962-03-27

Family

ID=35917541

Family Applications (1)

Application Number Title Priority Date Filing Date
CA639031A Expired CA639031A (en) Mine roof supports

Country Status (1)

Country Link
CA (1) CA639031A (en)

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