AU438221A - Improved rotary tool for enlarging the lower end holes or bores made by rock-drills for receiving blasting charges - Google Patents

Improved rotary tool for enlarging the lower end holes or bores made by rock-drills for receiving blasting charges

Info

Publication number
AU438221A
AU438221A AU4382/21A AU438221A AU438221A AU 438221 A AU438221 A AU 438221A AU 4382/21 A AU4382/21 A AU 4382/21A AU 438221 A AU438221 A AU 438221A AU 438221 A AU438221 A AU 438221A
Authority
AU
Australia
Prior art keywords
drills
enlarging
rock
rotary tool
improved rotary
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
AU4382/21A
Inventor
Mccracken Adam
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
Publication of AU438221A publication Critical patent/AU438221A/en
Expired legal-status Critical Current

Links

AU4382/21A Improved rotary tool for enlarging the lower end holes or bores made by rock-drills for receiving blasting charges Expired AU438221A (en)

Publications (1)

Publication Number Publication Date
AU438221A true AU438221A (en) 1922-02-23

Family

ID=

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