Processed blast furnace slag used in the form of granulated, pelletized, or air-cooled, ground and screened to produce an additive in the melting process for glass manufacturing; Processed blast furnace slag used in the form of granulated, pelletized, or air-cooled, ground and screened to produce an aggregate for use in construction applications; Processed blast furnace slag used in the form of granulated, pelletized, or air-cooled, ground and screened to produce an additive for use in the ag...