A powder management system, comprising : an additive manufacturing machine; a first powder management container and a second powder management container each fluidly connected to the additive manufacturing machine, the first container and the second container each comprising: a keg body having an interior for storing a metallic powder; a first port defined by the keg body , the first port fluidly coupled to the keg body interior for transferring powder into and from the interior of the keg body ; and a second port defined by the keg body , the second port fluidly coupled to the keg body interior for controlling atmosphere within the interior of the keg body and characterized by further comprising a third port defined by the keg body , the third port offset from the first port and the second port , the third port fluidly coupled with the keg body interior for controlling atmosphere within the interior of the keg body ; wherein the first powder management container is connected to a powder conduit for transferring build powder to the additive manufacturing machine; and wherein the second powder management container is connected to a reuse conduit of the additive manufacturing machine for storing unused powder. an additive manufacturing machine; a first powder management container and a second powder management container each fluidly connected to the additive manufacturing machine, the first container and the second container each comprising: a keg body having an interior for storing a metallic powder; a first port defined by the keg body , the first port fluidly coupled to the keg body interior for transferring powder into and from the interior of the keg body ; and a second port defined by the keg body , the second port fluidly coupled to the keg body interior for controlling atmosphere within the interior of the keg body and characterized by further comprising a third port defined by the keg body , the third port offset from the first port and the second port , the third port fluidly coupled with the keg body interior for controlling atmosphere within the interior of the keg body ; wherein the first powder management container is connected to a powder conduit for transferring build powder to the additive manufacturing machine; and wherein the second powder management container is connected to a reuse conduit of the additive manufacturing machine for storing unused powder. a keg body having an interior for storing a metallic powder; a first port defined by the keg body , the first port fluidly coupled to the keg body interior for transferring powder into and from the interior of the keg body ; and a second port defined by the keg body , the second port fluidly coupled to the keg body interior for controlling atmosphere within the interior of the keg body and characterized by further comprising a third port defined by the keg body , the third port offset from the first port and the second port , the third port fluidly coupled with the keg body interior for controlling atmosphere within the interior of the keg body ; wherein the first powder management container is connected to a powder conduit for transferring build powder to the additive manufacturing machine; and wherein the second powder management container is connected to a reuse conduit of the additive manufacturing machine for storing unused powder. <EOS>