(Gillette, Wyo.) The Campbell County Recreation Center in Gillette is closed starting today Monday, May 8th through Sunday, May 14th for scheduled maintenance. It will re-open on Monday, May 15th at 5:00 a.m. The Campbell County Aquatic Center will be available for use Monday through Thursday from 6:00 a.m. – 7:30 a.m. for adult only lap swim.