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Paragraph 29

Original text. Later amendments are not shown.

The manager of every mine in which any diesel locomotive runs shall ensure that no such locomotive runs therein if—

(a)

in the case of a locomotive in a mine of stratified ironstone or of shale, being a locomotive which was in use before the first day of May, nineteen hundred and forty-nine or was required to be delivered under a contract made before that date, gas emitted from its exhaust contains more than 0.4 per cent. by volume of carbon monoxide or 0.15 per cent. by volume of oxides of nitrogen; or

(b)

in any other case, gas emitted from its exhaust contains more than 0.2 per cent. by volume of carbon monoxide or 0.1 per cent. by volume of oxides of nitrogen.