Global Materials Services LLC (GMS) has acquired Arrow Terminals, Inc. of Sewickley, Pa., an operator of marine terminals. Arrow operates seven domestic river terminals in Industry, Pa.; Chicago, Ill.; Houston; Decatur, Ala.; Mingo Junction, Ohio; and Follansbee and Brooklyn Junction, W.V., which are engaged in material handling and processing operations for ferroalloy and other bulk products. Arrow also provides on-premise logistics services at steel mills and other plant sites. GMS operates seven other river terminals, five on the Mississippi River and two on the Arkansas River. These terminals provide warehouse and distribution services for steel and bulk shippers, including trucking to customer plant sites.