Company had 3,518 miles of crude oil pipelines, 252 miles of product lines, six refineries processing an average of 124,000 barrels a day, operated nine tow boats on the inland waterways, and owned over 100 barges. Although still involved as chairman of Ashland's Finance Committee and Executive Committee, Blazer stepped down as chief executive officer in 1957. Louisville Refining Company was purchased in 1959. United Carbon was purchased in 1963. In 1966, Ashland Oil and Refinery Company Inc.'s sales had grown to $699,000,000. Diversification continued with the purchase of Warren Brothers in 1966, which later was to become Ashland Paving and Construction. A major leap into the chemical industry occurred in 1967 when Ashland purchased ADM Chemical Group. This chemical distribution segment of the business would go on to be one of the primary functions of the company in the later part of the 20th century. In 1969, the company reorganized to form Ashland Petroleum with Robert T. McCowan as its first president, as well as entering into a joint venture in Coal mining under the name Arch Mineral. 1980s-1990s In the 1980s and early 1990s, Ashland continued to expand, buying The Permian Corporation which it merged with Scurlock Oil Company in 1991 to form a subsidiary known as Scurlock Permian Corporation. In 1992, most of Unocal's chemical distribution business was acquired, making Ashland the top chemical distributor in North America. At this time, the Industrial Chemicals & Solvents (IC&S) division was established. The company's name was changed from "Ashland Oil, Incorporated" to the present "Ashland Inc." in 1995, which noted the reduced importance of oil in the overall business. In 1998, the petroleum division merged with Marathon Oil to form Marathon Ashland Petroleum, LLC (MAP). Following that in 1999, Ashland was #102 on the Fortune 200 list of companies when it agreed to sell its Scurlock Permian subsidiary to Plains All American Pipeline and the headquarters were moved from Ashland to Covington, Kentucky, although the company maintained an office building in Russell, adjacent to Ashland. A monumental change came in 2005, when Ashland sold its shares of the petroleum joint venture to Marathon Oil, effectively dissolving the remnants of their petroleum division. After the sale, the company was no longer involved in the refining or marketing of fuels. The original oil refinery in Catlettsburg, Kentucky, is still in operation to date, owned and operated by Marathon. In 2006, Ashland