Petroleum industry in Nigeria Brass River, Forcados, and Pennington Anfan. As recently as 2010, Nigeria provided about 10% of overall U.S. oil imports and ranked as the fifth-largest source for oil imports in the U.S. However, Nigeria ceased exports to the US in July 2014 because of the impact of shale production in America; India is now the largest consumer of Nigerian oil. There are six petroleum exportation terminals in the country. Shell owns two, while Mobil, Chevron, Texaco, and Agip own one each. Shell also owns the Forcados Terminal, which is capable of storing of crude oil in conjunction with the nearby Bonny
Types of trombone Types of trombone There are many different types of trombone. The most frequently encountered trombones today are the tenor and bass, though as with other Renaissance instruments such as the recorder, the trombone has been built in every size from piccolo to contrabass (pitch of brass instruments). See trombone for information about the instrument in general. The cimbasso is a brass instrument in the trombone family, with a sound ranging from warm and mellow to bright and menacing. It has three to six piston or rotary valves, a predominantly cylindrical bore, and in its modern incarnation is most often pitched