MOX is the abbreviation of Malaysia Oxygen Berhad, which manufactures and distributes industrial, special, and medical gases. Back then, the plant I interned with got their industrial carbon dioxide and nitrogen from MOX daily. These gasses are pressurized, compressed and delivered in liquid form for easy transport. And even though it does not go directly into the meat patties, without these gasses, the manufacturing plant would come to a standstill halt.