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|Power supply for remote mining developments is compared with supply to the general public with the conclusion that the private power plant operator has many opportunities to minimise his costs which are not open to public utilities. The main features of diesel, gas turbine and steam power plant and the limitation upon their application which may be imposed by the fuels available and the local conditions at remote sites are outlined. Reference is made to the value of joint examination by the mining engineer, metallurgist and power engineer to decide how to make best overall use of capital, labour and energy in co-ordinating the design of power and process plant and in setting no more than adequate standards of reliability and efficiency. Fluctuations in world markets make it difficult to plan mining operations to a firm time base. Suggestions are made to minimise the financial risk in forward expenditure upon power plant which in large sizes due to longer construction time may have to be ordered before a final decision is taken upon the mining development it is to serve.|