Atlantic City, New Jersey (AP) -- With the economy crumbling and revenues plunging, Atlantic City is considering delaying the start of a total smoking ban at its 11 casinos. The ban, which was approved in April after a year-and-a-half battle between casino workers and gambling hall operators, is set to take effect Oct. 15. But even before it was approved, casino owners said they feared the ban would cost the industry millions of dollars in lost revenue and lead to job losses.