Industrial sand is an essential part of the ferrous and non-ferrous foundry industry. Ferrous metals are used in making automobiles, train, and the railroad track they roll on, frying pans, parts for durable goods, shipping containers, industrial piping, fencing, tooling, nail and tools to name a few. Non-ferrous metals are lighter weight, malleable, resistant to corrosion/rust, and used in flammable environments since they cannot generate a spark. Metal parts ranging from engine blocks to sink faucets are cast in a sand and clay mold to produce the external shape, and a resin bonded core that creates the desired internal shape. Silica’s high fusion point and low rate of thermal expansion of 4 screen products produce stable cores and molds compatible with all pouring temperatures and alloy systems. Its chemical purity also helps prevent interaction with catalysts or curing rate of chemical binders.