existing miscellaneous minemeans a miscellaneous mine which is in existence or under construction on 1st April 1989;
insetmeans a heading, chamber or other space in the course of being driven or excavated from the shaft or outlet and which is accessible only from the shaft or outlet and is not being driven or excavated solely or mainly for the purpose of getting of minerals or products of minerals.
minemeans a mine within the meaning of section 180 of the Mines and Quarries Act 1954;
miscellaneous minemeans a mine other than a mine of coal, stratified ironstone, shale or fireclay;
ownermeans in relation to a mine the person for the time being entitled to work it;
shaftincludes a staple-pit, raise, winze or any similar excavation whether sunk or in the course of being sunk and so much of any superstructure provided at the top of a shaft as forms an extension to the shaft shall be deemed to form part of the shaft which is below ground.
the 1974 Actmeans the Health and Safety at Work etc.