274. Underground ventilation.

Prima facie a mine1 owner has no right to ventilate his own mine by making an aperture into or an airway through his neighbour's mine2, and apparently he may not ventilate his mine by sending his air into his neighbour's mine or by drawing air from that mine into his own, even though he makes no airway through or into his neighbour's mine for the purpose. If, however, through the operation of natural causes, or in consequence of his neighbour's acts, the mine owner's mine is ventilated by the passage of air from his mine to his neighbour's mine,

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