CA818995A - Mining method and apparatus - Google Patents

Mining method and apparatus

Info

Publication number
CA818995A
CA818995A CA818995A CA818995DA CA818995A CA 818995 A CA818995 A CA 818995A CA 818995 A CA818995 A CA 818995A CA 818995D A CA818995D A CA 818995DA CA 818995 A CA818995 A CA 818995A
Authority
CA
Canada
Prior art keywords
mining method
mining
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
CA818995A
Inventor
S. Mcdowell Glenn
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.)
Joy Manufacturing Co
Original Assignee
Joy Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA818995A publication Critical patent/CA818995A/en
Expired legal-status Critical Current

Links

CA818995A Mining method and apparatus Expired CA818995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA818995T

Publications (1)

Publication Number Publication Date
CA818995A true CA818995A (en) 1969-07-29

Family

ID=36291546

Family Applications (1)

Application Number Title Priority Date Filing Date
CA818995A Expired CA818995A (en) Mining method and apparatus

Country Status (1)

Country Link
CA (1) CA818995A (en)

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