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2009
|
Invention
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Battery powered mechanized raise climbing system. A battery powered raise climber system is provi... |
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2008
|
Invention
|
Side shift raise climbing system. A side-shift raise climbing system is provided that utilizes a ... |
|
|
Invention
|
Portable raise climbing system. A portable raise climbing system is provided that comprises a sta... |
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2004
|
Invention
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Earth boring apparatus for sinking shafts and method of excavating a shaft. An earth boring appar... |
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|
Invention
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Method and apparatus for raise bore drilling and lining a bore hole. An apparatus is provided for... |
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2001
|
Invention
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Method and apparatus for utilizing the full capacity of a particular type of mine hoist for excav... |
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2000
|
Invention
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Excavating a mine shaft.
Disclosed is a device for excavating a mine shaft, comprising... |
