Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1997-12-19
1999-06-22
Graysay, Tamara
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405288, E21D 2100
Patent
active
059136413
ABSTRACT:
A cable truss support system for supporting the roof of a mine includes two cables each having an end secured in the roof of a mine. The other ends of the cables are connected by a twisted ring anchor and are secured to the anchor by wedges through which the cables pass.
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Dyckeroff & Widmann AG of Munich
Graysay Tamara
Lagman Frederick L.
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