Research object: the current system of accounting, spending, calculation of product cost and audit of production costs in the coal mining industry. Purpose of research: improvement of theory and practice of accounting and cost audit and of calculation of products' production cost in the coal mining industry Methods of research: the modern theory of market economy, accounting and audit, operation of domestic and foreign companies in accounting and products' production cost calculation is taken for the theoretical and methodological basis of the research. Used for that purpose were results of research in problems of theory and practice of accounting, economic control, cost analysis and audit, technology and organization of coal mining; industry's instructions and standards' documents, statistical data, information of scientific and scientific-practical conferences on production cost accounting and audit problems. Theoretical and practical results: generation and substantiation of proposals aimed at improving the methodology of cost accounting and products' production cost calculation. The results of the research are the basis for improving the industry's temporary methodological recommendations on the production cost accounting of the finished products in mines and open pits; some provisions have been used in original publications, educational publications, speeches at conferences and some companies' activities. Scientific novelty is in development of new methodological approaches and practical recommendations in the area of the production cost accounting and audit, with coal mining companies being taken for an example. The main provisions, which represent the novelty, are an own product of the author and lie in the following: firstly, substantiation of the main principles in generation of the methodology of financial and in-company cost accounting and products' production cost calculation in coal mining companies with consideration of the domestic and foreign experience in the market conditions, which allows us to increase efficiency of companies' accounting departments, offer the notion of essential, insignificant, effective and boundary costs in order to substantiate processes of production cost generation in production activity of coal mining companies; have got further developed - theoretical and practical methodology aspects of cost accounting and product's production cost calculation in coal mining companies, which allows one to draw up an informational basis to make managerial decisions; approaches to creation of in-company accounting and calculation of products' production costs in coal mining companies in order to develop a methodology for production cost monitoring; methodology of accounting with the use of economic information automated processing at coal mining companies, which increases efficiency of accounting and in-company monitoring of its implementation; improved - industry's temporary methodological recommendations in accounting of finished products' production cost in mines and open pits, which increases efficiency of economic expedience of effective in-company monitoring of its implementation; nomenclature and composition of calculation articles of the production cost in coal mining companies, which increases informational efficiency of the managerial accounting; basis of cost qualification with coal mining as an example; methodology of accounting of permanent and variable costs at coal mining companies, which insures an increase of truthfulness and assessment of the information's completeness, which is the basis for making managerial decisions. Implementation phase: the research results have been implemented in the practical activity of the "Krasnodonvugilya" Company, "Shakhta im. A. I. Gayovogo" Company and in a training process of the National Academy of Management in the following classes: "Accounting", "Organization of accounting", "Accounting in foreign countries". A practical workbook "Accounting in coal mining" edited by V.V. Sopka and O.I. Shatokhinoy, which is used by the Ministry of Fuel and Energy of Ukraine, has been reviewed. Effectiveness of implementation: it allows one to increase truthfulness of accounting information in conformity to the national legislation, improve cost accounting and calculation of products' production cost. Area (industry) of application: economic activity of coal mining companies and audit firms.
