Marathon Oil Corp. engages in the exploration, production, and marketing of liquid hydrocarbons and natural gas. The company is headquartered in Houston, Texas and currently employs 1,681 full-time employees. The firm is focused on the United States resource plays, which include Eagle Ford in Texas, Bakken in North Dakota, Sooner Trend Anadarko Basin Canadian and Kingfisher Counties (STACK) and South-Central Oklahoma Oil Province (SCOOP) in Oklahoma and Permian in New Mexico and Texas. The firm operates through two segments: United States and International. The United States segment explores for, produces and markets crude oil and condensate, natural gas liquids (NGLs) and natural gas in the United States. The International segment explores for, produces and markets crude oil and condensate, NGLs and natural gas outside of the United States as well as produces and markets products manufactured from natural gas, such as LNG and methanol, in Equatorial Guinea (E.G.). Its subsidiaries include Alba Associates LLC, Alba Equatorial Guinea Partnership, L.P., Alba Plant LLC and AMPCO Marketing, L.L.C.