UNDERGROUND COAL MINE LOGISTICS AND PRACTICES: Transport of personnel, supplies and equipment -- Coal and rock transportation -- Electrical distribution and communications systems -- Water handling systems -- Hydraulics -- Ventilation -- Logistics planning -- INDUSTRY CONCERNS: Current problems or areas of immediate concern -- Future concerns -- LOGISTICS COST ANALYSIS: Cost categories -- Cost investigation -- INDUSTRY NEEDS: Transport of personnel, supplies and equipment -- coal and rock transportation systems -- Electrical distribution and communications systems -- Water handling, hydraulics, and ventilation -- Other logistics needs -- CURRENT RESEARCH AND DEVELOPMENT: Domestic research and development -- Foreign research and development.