CA479290A - Dispositifs de coincage de trous de mine - Google Patents

Dispositifs de coincage de trous de mine

Info

Publication number
CA479290A
CA479290A CA479290A CA479290DA CA479290A CA 479290 A CA479290 A CA 479290A CA 479290 A CA479290 A CA 479290A CA 479290D A CA479290D A CA 479290DA CA 479290 A CA479290 A CA 479290A
Authority
CA
Canada
Prior art keywords
drill hole
wedging devices
hole wedging
devices
drill
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
CA479290A
Other languages
English (en)
Inventor
A. Brant Arthur
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.)
Geophysical Exploration Co
Original Assignee
Geophysical Exploration Co
Publication date
Application granted granted Critical
Publication of CA479290A publication Critical patent/CA479290A/fr
Expired legal-status Critical Current

Links

CA479290A Dispositifs de coincage de trous de mine Expired CA479290A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA479290T

Publications (1)

Publication Number Publication Date
CA479290A true CA479290A (fr) 1951-12-11

Family

ID=35618957

Family Applications (1)

Application Number Title Priority Date Filing Date
CA479290A Expired CA479290A (fr) Dispositifs de coincage de trous de mine

Country Status (1)

Country Link
CA (1) CA479290A (fr)

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