Mining extraction; Quarrying services; Providing repair and maintenance information relating to mining machines and apparatus; Pipeline construction and maintenance; Drilling of wells; Repair of power lines; Installation and repair of computer hardware; Repair or maintenance of laboratory apparatus and instruments; Repair services of equipment used in the mining industry; Repair or maintenance of chemical plants; Installation and maintenance of equipment used in the mining industry; Earthmoving for mining; Repair of mining machinery
Building Construction and Repair