American Stock Exchange Lists Common Stock of Allis-Chalmers Corporation NEW YORK, Sept. 13 /PRNewswire/ -- The American Stock Exchange(R) (Amex(R)) today listed the common stock of Allis-Chalmers Corporation under the ticker symbol ALY. Allis-Chalmers Corporation provides equipment and trained personnel to the oil and natural gas drilling industry, including specialized equipment and operations to install casing and production tubing required to drill and complete oil and gas wells, directional and horizontal drilling services for specific targeted reservoirs that cannot be reached vertically, and air drilling services. "We are pleased to welcome Allis-Chalmers to the increasing number of companies from the energy sector choosing to list on the American Stock Exchange," said John McGonegal, senior vice president of the Amex Equities Group. "The Amex looks forward to working closely with them on building additional shareholder value as well as increased investor attention." "We are very excited about our listing on the Amex. This is a significant step forward for our company and our shareholders," said Munawar H. Hidayatallah, Chairman of Allis-Chalmers. "We look forward to working with the Amex and believe the listing will enable us to increase our visibility and become more attractive to investors." The specialist in Allis-Chalmers Corporation will be Weiskopf Silver & Co. For further information on ALY and other Amex-listed companies, please visit http://www.amex.com/. The American Stock Exchange(R) (Amex(R)) is the only primary exchange that offers trading across a full range of equities, options and exchange traded funds (ETFs), including structured products and HOLDRS(SM). In addition to its role as a national equities market, the Amex is the pioneer of the ETF, responsible for bringing the first domestic product to market in 1993. Leading the industry in ETF listings, the Amex lists 138 ETFs. The Amex is also one of the largest options exchanges in the U.S., trading options on broad-based and sector indexes as well as domestic and foreign stocks. For more information, please visit http://www.amex.com/. DATASOURCE: The American Stock Exchange CONTACT: Lynn Duffy of American Stock Exchange, +1-212-306-1654 or Web site: http://www.amex.com/

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