Barry Rolfes and Ryan Rolfes, of Butter's BBQ Bones, cut into a slab of pork ribs at the 7th annual Mercer County Ribfest that kicked off Friday at the Mercer County Fairgrounds. The Rolfes expect to go through nearly 900 pounds of ribs and pulled pork during the two-day extravaganza that will feature a variety of BBQ rib food stands, live music, a car show and a cruise-in. Today's lineup of activities includes a Ribfest 5K at 9:30 a.m., Buckeye State Pedal Pull at 1 p.m., bike night (all motorcycles welcome) at 5 p.m., live music at 6 p.m., rib-eating contest at 8:30 p.m. and other activities.