COSTSUM is a series of computer programs designed to provide detailed analysis of the costs of coal surface mining and reclamation. It works with data from haulback operations, where haulers, loaders, and dozers are the primary machines used to handle spoil. It is intended for use by mining engineers, regulatory agency personnel, and researchers with an interest in the effects of spoil handling and reclamation practices upon overall mining cost. The primary data requirements are that the times, types, and locations of all machine operations at the site of interest be recorded on a daily basis. Additional required data include coal production, coal prices, overburden volumes, and machinery operating costs. Data are entered into computer files according to specified formats. The programs calculate cost totals for each mining area, which are compared to returns in order to assess the profitability of mining that area. Cost totals are broken down into cost categories for each mining area and recalculated on a per cubic yard of spoil basis for spoil handling operations and a per ton basis for coal handling operations. Thus, the user is able to identify those areas where spoil was handled most efficiently and those where spoil handling was most costly, and the reasons why.

This bulletin serves as a guide for the use of COSTSUM. Copies of the programs may be obtained free of charge by contacting the authors.