Metallic waste is a type of waste that is composed of metals and other materials. Two common examples of metallic waste are SLAG and DROSS. SLAG is a by-product of metal smelting or refining processes and is usually composed of a mixture of oxides, silicates, and other materials. DROSS is a waste product of metalworking processes and is composed of metal oxides, salts, and other materials. Both SLAG and DROSS are considered hazardous materials and must be disposed of properly.