What are mines and minerals? Mines There is no one definitive meaning of the word ‘mine’. It is a protean word (ie one which takes its meaning from the context in which or, in the words of Lord Halsbury in Glasgow v Farie, the intention with which it is used). Specific legislation (eg the Mines and Quarries Act 1954, the Coal Industry Act 1994 (CIA 1994), the Town and Country Planning (General Permitted Development) Order 1995, SI 1995/418, and the Town and Country Planning (General Permitted Development) Order 1995, SI 2015/596), may give ‘mine’ a particular meaning for the purposes of that legislation. Similarly, but rarely, a document may define ‘mine’ for the purposes of that document. In the absence of any express definition, the word 'mine' takes its meaning from the other words used in the particular statute or document in question, and also from the factual context. That being said, the word 'mine' is perhaps most commonly and generally used in ordinary language to mean an underground excavation made for the purpose of getting minerals.