The Catlettsburg Refinery is the 29th largest American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 oil refinery

Oil refinery

An oil refinery or petroleum refinery is an industrial process plant where crude oil is processed and refined into more useful petroleum products, such as gasoline, diesel fuel, asphalt base, heating oil, kerosene, and liquefied petroleum gas...

. It is located in extreme northeastern Kentucky

Kentucky

The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

, at the intersection of Interstate 64

Interstate 64

Interstate 64 is an Interstate Highway in the Midwestern and Southeastern United States. Its western terminus is at I-70, U.S. 40, and U.S. 61 in Wentzville, Missouri. Its eastern terminus is at an interchange with I-264 and I-664 at Bowers Hill in Chesapeake, Virginia. As I-64 is concurrent with...

 and U.S. Route 23 just outside the town of Catlettsburg, Kentucky

Catlettsburg, Kentucky

Catlettsburg is a city in Boyd County, Kentucky, United States and is the county seat of Boyd County. The city population was 1,960 at the 2000 census. The city's postal ZIP code serves a greater population of 10,029, which is a better reflection of the community's size. Catlettsburg is a part of...

 and near the city of Huntington, West Virginia

Huntington, West Virginia

Huntington is a city in Cabell and Wayne counties in the U.S. state of West Virginia, along the Ohio River. Most of the city is in Cabell County, for which it is the county seat. A small portion of the city, mainly the neighborhood of Westmoreland, is in Wayne County. Its population was 49,138 at...

. The facility was built in 1922 by the Ashland Refining Company. The refinery now occupies a 650 acres (263 ha) plus site, producing more than 212000 oilbbl/d, and employing more than 800 employees. On average it processes 2% of the US oil supply daily. It is currently owned and operated by the Marathon Petroleum Company

Marathon Petroleum Company

Marathon Petroleum Corporation is a U.S. based oil refining, marketing, and pipeline transport company. The company was formed as a subsidiary on September 1, 2005, from the former Marathon Ashland Petroleum, LLC, and is based in Findlay, Ohio...

 out of Findlay, Ohio.

Due to the coal mining

Coal mining

The goal of coal mining is to obtain coal from the ground. Coal is valued for its energy content, and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United States,...

 industry and the petroleum

Petroleum

Petroleum or crude oil is a naturally occurring, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. Petroleum is recovered mostly through oil drilling...

 products shipped from the refinery, the Huntington-Tri-State Port is the largest inland port in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, with 76.5 million tons shipped in 2007.

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