After years of delay and attempts by Maryland’s racing industry to get it moved, the casino planned near the Arundel Mills mall is scheduled to break ground on Thursday. Planned by Cordish, a Baltimore-based developer, the casino is slated to be the third slots site in Maryland. Licenses for the remaining two designated sites (as approved by voters in 2008) are still waiting for a viable developer. Cordish has said he believes his site, when fully operational, can generate up to $400 million in annual tax revenue for the state.