In these regulations, unless the context otherwise requires,—
acting manager means the employee designated for the purpose referred to in regulation 7(1)(b)
certificate of competence means a certificate of one of the kinds referred to in regulation 16
coal—
(a) means anthracite, bituminous coal, lignite, oil shale, peat, and sub-bituminous coal; and
current, in relation to a certificate of competence, means a certificate of competence that has been issued under regulation 23 and has not expired or been cancelled or suspended under regulation 26
employer includes a person who controls a place of work
geothermal fluid means all steam, water, and water vapour, and every mixture of all or any of them (which mixture may include gases), that has been heated within the earth by natural phenomena to a temperature of 70°C or more
mineral—
(b) does not include clay, coal, gravel, limestone, sand, or stone
operation—
(a) includes any operation in which any activity is carried out pursuant to a prospecting licence or an exploration licence granted under the Mining Act 1971 or a coal prospecting licence granted under the Coal Mines Act 1979 or a prospecting permit or an exploration permit granted under the Crown Minerals Act 1991, being in each case a licence or permit in force; and
(e) includes, in relation to any operation in which a mine or a quarry is worked, any activity carried out in relation to the working of the mine or the quarry and any activity required to open or close the workings in the mine or the quarry; and
(f) includes, in relation to any operation in which a tunnel is made, any activity carried out in relation to the making of the tunnel and any activity required to open or close the works relating to the making of the tunnel; but
petroleum means—
(c) any naturally occurring mixture of 1 or more hydrocarbons (other than coal) whether in a gaseous, liquid, or solid state, and 1 or more of the following, namely hydrogen sulphide, mercaptan, nitrogen, helium, or carbon dioxide—
and includes any petroleum as so defined that has been mined or otherwise recovered from its natural condition, or that has been so mined or otherwise recovered but that has been returned to a natural reservoir for storage purposes in the same or an adjacent area