Assembly for preventing the fall of dust and debris in a mine

Details Assembly for preventing the fall of dust and debris in a mine Assembly for preventing the fall of dust and debris in a mine

1975-09-02

1977-01-18

Gilliam, Paul R.

29191, 291914, L21D 1900

Patent

active

040032086

ABSTRACT:
An assembly for preventing the falling of dust and debris from the roof and from the break of a mine, particularly a coal mine. The assembly comprises a shield support structure having roof bars and a roof covering disposed between the roof of the mine and the roof bars. The roof covering includes a welded wire-netting sheet having longitudinal and transverse wires with a dust-tight web welded or fixed in between said longitudinal and transverse wires.

REFERENCES:
patent: 2099047 (1937-11-01), Bradshaw
patent: 2361620 (1944-10-01), Gerlach et al.
patent: 2371789 (1945-03-01), Batten
patent: 2728698 (1955-12-01), Rudner
patent: 3107902 (1963-10-01), Calder
patent: 3902324 (1975-09-01), Barrett

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