Welcome Back, Welcome Back, Welcome Back…. This Thursday May 2nd The Wheel Mill is hosting the Welcome Back Cottle Charity Jam. The Jam runs from 6-10 and it costs $10 to ride. Proceeds benefit the Rickey Bates BMX Banned Together Charity which provide bicycles, equipment and training to underprivileged kids. The Wheel Mill is Located at 6915 Hamilton Ave. Pittsburgh, PA 15208.