Flammable gas as a fuel. History, the present and perspective of gaseous fuels use. Energy and environmental aspects of gasification. Natural resources and their character. Mining of a natural gas, transport, storage, liquefaction and distribution. Scheme of gas distribution and creation piping network. Transit pipelines, long-distance pipelines, local network. The use of gas in metallurgy (blast furnace, coke, converter, mixed), in industry and municipal areas (degassing, propane-butane and biogas). Properties of fuel gases. Gas engineering and advanced technology of gas use. Planning, control and balance gas consumption, gasholders and underground gas reservoir. Design and construction of gas devices.