Production function of a coal mining enterprise with energy expenditures as its argument

The matter of ensuring a highly efficient performance of the coal mining enterprises is topical and is reflected as a basic in all branch programme documents. The efficiency here, as a rule, is recognized as a profitability of a coal mine performance. In author’s opinion, economic aspects of efficiency are the most important for independent mines and horizontally integrated coal holdings (enterprises). For vertically integrated systems and the country economy as a whole energy efficiency is determinative. Fears concerning energy inefficiency of coal mining in Donetsk Basin were introduced in the 80