British Civil Aviation in 1998 30 January British Airways launches the low-fare airline Go.
Nitrogen oxides can irritate airways, especially your lungs.
Also, fine particles may be drawn into the respiratory airways where they may adversely affect health.
The circulation of air in any given division of the mine is further controlled and its course determined by temporary or permanent partitions, known as brattices, by the erection of stoppings, or by the insertion of doors in the mine passages and by the use of special airways.
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