Caisson sinking method
Concrete lining of drilled shaft
Construction of a concrete lined chamber
Containment casing for a deep well gravity pressure reactor vess
Formwork apparatus
Liner for large diameter borehole
Method and apparatus for constructing reinforced concrete walls
Method and apparatus for supporting the wall of an upwardly exca
Method and device for installing a shaft lining in shafts throug
Method and machine for constructing shafts
Method and system for lining shafts
Method of installing a liner in a large diameter borehole
Method of lining a vertical mine shaft with concrete
Mine shaft guide system
Mine shaft liner
Mineshaft closures
Shaft sinking method
Silos and methods of burying same
Tamping rammer
Trapezoidal divider wall for use in shaft construction