Mine ventilation overcast

Details Mine ventilation overcast Mine ventilation overcast

1991-10-15

1992-12-29

Corbin, David H.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

98 50, E21D 900, E21F 100

Patent

active

051746824

ABSTRACT:
An overcast serving utility in the ventilation of tunnelways in an underground mine defined by an erected frame, typically made from steel, and including pivoting clips and splice strips for ready assembly and, as well, the absence of comingling of uncontaminated and contaminated air. The invention simplifies the approach for passing new air into the mining area and permitting contaminated air flowing through lateral tunnelways to pass over the overpass.

REFERENCES:
patent: 1535162 (1925-04-01), Kime
patent: 2729065 (1956-01-01), Craggs et al.
patent: 2729066 (1956-01-01), Kennedy et al.
patent: 4484837 (1984-11-01), Kennedy et al.
patent: 4621951 (1986-11-01), Dewson

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