Description. Joseph J. Magnolia Inc is hiring. Pipe layers. for the. Hyattsville. offices. Pipe laying experience should be specific to. Site Utility Work. We are hiring individuals experienced in installing and repairing water, storm water, and sewer pipe below the ground for main line and service laterals. Magnolia provides Flagging/traffic control and confined space training. This work is outside so one must be able to work in all weather cond...