Class Code: 4568
Per NCCI's Scopes Code Description:
Code 4568 is applied to insureds engaged in the production or refining of salt, potash or borax. Salt ores, amines, caustic soda and soda ash are received from others. Raw brines also may be received from others or the brines may be pumped from salt wells or lakes by the insured. This classification contemplates the driving of wells and the pumping of the raw brines. Raw brines are partially evaporated and salt ores are dissolved in water to produce a brine of the desired concentration for processing. Each brine contains a number of salts and other minerals which must be removed to produce a concentration of the particular salt desired. Common salt (sodium chloride) is refined by adding caustic soda and soda ash to remove impurities. Muriate of potash (potassium chloride) is refined by adding an amine to the brine which causes the sodium salts to float to the surface where they are skimmed off. Borax is separated from potassium chloride by a rapid cooling of a hot brine. The solutions of purified salts are then fully evaporated by heating in a partial vacuum to produce crystals or granules which are then dried and filled into cartons, bags, barrels or shipped in bulk. Insureds engaged in the desalinization of water to be used for domestic purposes have been assigned by analogy to Code 4568. The operations involve flash evaporation and are approximately the same as encountered in the production of salt except that the process is in reverse, i.e., the product produced is fresh water instead of salt.