Journeyman Welder. Mississippi Tank Company is a leading manufacturer of propane and anhydrous ammonia transport trailers in the United States and Canadian market. To remain an industry leader, we need an experienced, hard-working, and skilled welder to join our team. Responsibilities. Perform MIG weld and Flux Core Arc Welding. Tack / Weld / Fabrication and repair equipment. Grinding / cleaning / beveling of fit-ups where required. Use & Underst...