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AU291377B2 - Raise drilling method and mechanism - Google Patents
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AU291377B2 - Raise drilling method and mechanism - Google Patents

Raise drilling method and mechanism

Info

Publication number
AU291377B2
AU291377B2 AU20354/67A AU2035467A AU291377B2 AU 291377 B2 AU291377 B2 AU 291377B2 AU 20354/67 A AU20354/67 A AU 20354/67A AU 2035467 A AU2035467 A AU 2035467A AU 291377 B2 AU291377 B2 AU 291377B2
Authority
AU
Australia
Prior art keywords
drilling method
raise drilling
raise
drilling
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
AU20354/67A
Other versions
AU2035467A (en
Inventor
DOUGLAS F. WINBERG DEANE. McCURDY and RICHARD J. ROBBINS ROBERT E. CANNON
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.)
James S Robbins And Associates Inc
Original Assignee
James S Robbins And Associates Inc
Filing date
Publication date
Application filed by James S Robbins And Associates Inc filed Critical James S Robbins And Associates Inc
Application granted granted Critical
Publication of AU291377B2 publication Critical patent/AU291377B2/en
Publication of AU2035467A publication Critical patent/AU2035467A/en
Expired legal-status Critical Current

Links

AU20354/67A 1967-04-14 Raise drilling method and mechanism Expired AU291377B2 (en)

Publications (2)

Publication Number Publication Date
AU291377B2 true AU291377B2 (en) 1967-06-08
AU2035467A AU2035467A (en) 1967-06-08

Family

ID=

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