Some brazing applications require the use of adequate fluxing agents to control cleanliness. Common fluxing materials are calcium carbonate, alkaline feldspars, manganese, and iron oxides. Lead can form a low melting slag capable of fluxing protective oxide scales. Due to Shino glazes' low fluxing temperatures, they should be applied before any other glazes. More and more of the Sylacauga deposits were being blasted and used for fluxing steel. Fluxing salt, like chlorides are also liquid inclusions.