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Lorna Propes, a Chicago trial lawyer and former Illinois racing commissioner, was appointed chairwoman of the Illinois Racing Board by Gov. Rod Blagojevich, a Democrat, on Wednesday, replacing Dennis Bookshester. Propes was a racing commissioner from 1989 until 2002, when her term was not renewed by former Gov. George Ryan, a Republican. . . . Jim McAlpine, president and CEO of Magna Entertainment Corp., and Steve Sexton, president of Churchill Downs and Ellis Park, have been named as members of the Management Committee of Equibase Company LLC, the Thoroughbred data-base enterprise. They replace Martin Jacobs of the Maryland Jockey Club and Bryan Krantz of Fair Grounds. . . . Jockey Olivier Doleuze admitted to the Hong Kong Jockey Club on Thursday that he had been using cocaine after he tested positive for that drug at Sha Tin on Sunday. As a result, the organization gave the French rider a six-month suspension. . . . "Seabiscuit," a one-hour documentary based on the best-selling book by Laura Hillenbrand, will air Monday at 9 p.m. Eastern on PBS stations as part of the American Experience series. "The Works," Television Games Network's half-hour program covering Kentucky Derby news, will be broadcast daily on Fox Sports New York and Fox Sports West this year. The Works will debut on April 24 and run for the following eight days.