Slipknot have announced that they will be performing at the Iowa State Fair in Des Moines, IA on August 10, 2019. Tickets will go on sale on November 2 at iowastatefair.org at 10:00 AM CDT. M. Shawn “Clown” Crahan told the Des Moines Register the following: “I’m gonna drive from my house directly to the…