Denton County.(includes brief articles)(Brief Article)(Statistical Data Included)

Quarterly losses: Stock for Speedway Motorsports Inc., owner of the Texas Motor Speedway in Fort Worth, dropped 38% on word that it expects a third-quarter loss because of higher costs and lower attendance. Speedway Motorsports shares fell $17.44 to close at $28.50. The North Carolina-based company, which mainly hosts stock-car races, blamed poor attendance at Indy Racing League events in Atlanta and Las Vegas, costs of selling the industrial park adjacent to its Las Vegas Motor Speedway and marketing expenses at its Oil-Chem Research Unit.

Newly elected officer: Directors at Denton-based International Isotopes Inc. have appointed David M. Camp, Ph.D., as CEO. Camp …