The name Metaline comes from the abundance of lead ore, galena, found in the region. Though these lead deposits were known since 1869, mining did not commence until 1886. Then in 1910, Metaline Falls was connected with the Idaho and Washington Northern Railroad. The Lehigh Portland Cement Co. plant was soon built, taking advantage of the region's limestone deposits. The Pend Oreille Mine was developed in 1929 by Lewis P. Larsen, and combined with production from the Grandview Mine and the Metaline Mine, the area became the state's largest producer of lead and zinc.