Tengasco, Inc. is in the business of exploration for and production of oil and natural gas. The Company's primary area of oil exploration and production is in Kansas. Its primary area of gas production is the Swan Creek field in Tennessee. The Company's wholly owned subsidiary, Tengasco Pipeline Corporation (TPC), owns and operates a 65-mile intrastate pipeline, which it constructed to transport natural gas from the Company's Swan Creek Field to customers in Kingsport, Tennessee. The Company's wholly owned subsidiary, Manufactured Methane Corporation (MMC) operates treatment and delivery facilities using the latest developments in available treatment technologies for the extraction of methane gas from nonconventional sources for delivery through the existing natural gas pipeline system, including the Company's pipeline system in Tennessee for eventual sale to natural gas customers. The principal markets for the Company's crude oil are local refining companies.