Abstract: A method for adding a large quantity of manganese alloy during the production of steel through cored wires is described. In various implementations, manganese alloy is enclosed within a cored wire. The wire is then added to a ladle containing molten primary steel. The wire sinks into the molten primary steel, and the outer encasing melts, thereby exposing the manganese alloy. The manganese alloy itself then melts. By having the manganese alloy encased in steel prior to being added to the molten primary steel, toxic gases and particles from the manganese are trapped within the molten steel. Furthermore, the outer encasing prevents manganese dust from escaping into the environment during transportation, which occurs when unprotected lumps of material are used. This helps prevent humans from being unnecessarily exposed.