HPC Hercules

Hercules Incorporated (NYSE: HPC) today announced the following schedule for its third quarter earnings release: � Earnings Release: October 27, 2008 - After the stock market closes. � Distribution: Business Wire and Hercules' website at www.herc.com. � FORM 10-Q: Anticipated filing on October 27, 2008 � Hercules manufactures and markets chemical specialties globally for making a variety of products for home, office and industrial markets. For more information, visit the Hercules website at www.herc.com.