(1)Where, in connection with the carrying on of a process at a quarry, elsewhere than in a building thereat, there is given off dust of such character and in such quantity as to be likely to be injurious to the persons employed, it shall be the duty of every manager of the quarry to ensure that there are taken in every part of the quarry to which his jurisdiction extends such steps as are necessary to protect those persons against inhalation of the dust.
(2)Where, in connection with the carrying on of any operations or process in a building at a quarry, there is given off dust of such character and in such quantity as to be likely to be injurious to the persons employed, it shall be the duty of the manager of the quarry (or, if there are two or more managers, of that one of them within whose jurisdiction the building is situate) to ensure—
(a)that the entry of the dust into the air or its accumulation in any place in circumstances in which its accumulation in that place might be harmful is minimised by means of steps in that behalf taken as near as possible to the point of origin of the dust;
(b)that any of the dust which enters the air is trapped or so dispersed as to render it harmless ; and
(c)that any of the dust which is not prevented from accumulating in a place in circumstances in which its accumulation in that place might be harmful is either systematically cleaned up and removed to a place where it cannot be harmful or treated in manner approved by the Minister for the purpose of rendering it harmless.
(3)Regulations may impose upon managers of quarries such requirements with respect to the use thereat of prescribed apparatus and the taking thereat of prescribed steps as it may appear to the Minister requisite or expedient to impose for the purpose of attaining any of the objects mentioned in the foregoing provisions of this section ; and regulations having effect by virtue of this subsection may provide either that compliance therewith by a manager of a quarry is to be taken, either without qualification or to a prescribed extent, as compliance with all or any of the requirements of the said provisions or that compliance with the regulations by a manager of a quarry is not necessarily to be taken as compliance with any of the said requirements.