Central station generation of power at mining centers

At the present time it is the well-known tendency of the electrical industry concerned in the production of commercial power, to produce this power in central stations of as large a capacity as possible consistent with the field to be covered, the object being to thus produce the power at the least possible cost. For this reason, every item of cost involved must be considered and attention must be given to each item of expense which will have a tendency to enable the producer to reduce the power cost. The cost of power production involves various items which may be classed under three general headings.