Potawatomi Bingo Casino will host a topping off ceremony Thursday for its $240 million expansion project at 1721 W. Canal St., Milwaukee. The 500,000-square-foot project will be complete this fall and will triple the size of the casino in the Menomonee Valley. The casino plans to hire an additional 1,000 employees to work at the expanded facility. "We are truly excited to be topping off the exterior work on the casino’s expansion, and now the focus of the construction can move inside," said Mike Goodrich, the casino’s general manager. "It’s a tremendous milestone and we’re extremely grateful for the hard work and dedication by so many in getting us to this point in the construction process."