 Major area employers include Jefferson Regional Medical Center, Simmons First National Corp., Tyson Foods, Evergreen Packaging, the Pine Bluff Arsenal and the Union Pacific Railroad.It is the large number of paper mills in the area that give Pine Bluff its, at times, distinctive odor, a feature known prominently among Arkansans.In 2009, Pine Bluff was included on the "Forbes" list of America's 10 most impoverished cities.