Sch FIRST para 7 Maintenance, operational, office and general equipment.
Interests of colliery concerns and of class A subsidiaries thereof in fixed and movable property used exclusively or mainly for any one or more of the following, namely, repairing and maintaining things falling within any of the preceding paragraphs or this paragraph, preparing and adapting such things for use, providing means of access, lighting, heating and ventilation for the purposes of any of the activities therein mentioned, and any other activities incidental to the carrying on of any of the activities therein mentioned, including the organisation and supervision thereof, and securing safety therein.