CA902647A - Machines for enlarging and shaping mine shafts and the like - Google Patents
Machines for enlarging and shaping mine shafts and the likeInfo
- Publication number
- CA902647A CA902647A CA902647A CA902647DA CA902647A CA 902647 A CA902647 A CA 902647A CA 902647 A CA902647 A CA 902647A CA 902647D A CA902647D A CA 902647DA CA 902647 A CA902647 A CA 902647A
- Authority
- CA
- Canada
- Prior art keywords
- enlarging
- shaping
- machines
- mine shafts
- mine
- 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
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA902647T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA902647A true CA902647A (en) | 1972-06-13 |
Family
ID=36410548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA902647A Expired CA902647A (en) | Machines for enlarging and shaping mine shafts and the like |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA902647A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4701073A (en) * | 1984-12-05 | 1987-10-20 | Sainsbury Garrett Michael | Shaft sinking method |
-
0
- CA CA902647A patent/CA902647A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4701073A (en) * | 1984-12-05 | 1987-10-20 | Sainsbury Garrett Michael | Shaft sinking method |
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