Mine support

Details Mine support Mine support

2011-03-22

2011-03-22

Singh, Sunil (Department: 3672)

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

Reexamination Certificate

active

07909542

ABSTRACT:
A mine support having a ductile metal sleeve, an interior of which is filled with a first aerated cementitious material of a first density which extends over at least 60% of the axial length of the sleeve. The interior of the sleeve is also filled with a second aerated cementitious material of a second density, which is less than the first density, and which fills the remainder of the interior of the sleeve.

REFERENCES:
patent: 881609 (1908-03-01), Nellen et al.
patent: 1895053 (1933-01-01), Staley
patent: 3779025 (1973-12-01), Godley et al.
patent: 4052029 (1977-10-01), Townsend
patent: 4565469 (1986-01-01), Chlumecky
patent: 6558085 (2003-05-01), Hall
patent: 2410976 (1974-09-01), None
patent: 3624928 (1988-01-01), None
patent: 299 08 546 (1999-08-01), None
patent: WO 00/14384 (2000-03-01), None

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