'Originally the "pig" type was cast in molds called pigs before being converted to steel'
Iron
NONPRECIOUS METALS: Originally the pig type was cast in molds called pigs before being converted to steel
Originally the "pig" type was cast in molds called pigs before being converted to steel
Originally the "pig" type was cast in molds called pigs before being converted to steel
NONPRECIOUS METALS
Iron
NONPRECIOUS METALS