AU214513B2 - Improvements in or relating to hardrock drilling apparatus and method of drilling hardrock therewith - Google Patents

Improvements in or relating to hardrock drilling apparatus and method of drilling hardrock therewith

Info

Publication number
AU214513B2
AU214513B2 AU7910/55A AU791055A AU214513B2 AU 214513 B2 AU214513 B2 AU 214513B2 AU 7910/55 A AU7910/55 A AU 7910/55A AU 791055 A AU791055 A AU 791055A AU 214513 B2 AU214513 B2 AU 214513B2
Authority
AU
Australia
Prior art keywords
hardrock
drilling
therewith
relating
drilling apparatus
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
AU7910/55A
Other versions
AU791055A (en
Inventor
Shaw Patrick
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
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of AU214513B2 publication Critical patent/AU214513B2/en
Publication of AU791055A publication Critical patent/AU791055A/en
Expired legal-status Critical Current

Links

AU7910/55A 1955-03-29 Improvements in or relating to hardrock drilling apparatus and method of drilling hardrock therewith Expired AU214513B2 (en)

Publications (2)

Publication Number Publication Date
AU214513B2 true AU214513B2 (en) 1956-07-05
AU791055A AU791055A (en) 1956-07-05

Family

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