Newmont Cerro Negro has three operating high-grade underground mines, Eureka, Mariana Central and Mariana Norte, and two underground deposits, Emilia and San Marcos, as well as five other deposits in late-stage evaluation for development to expand existing operations at the Marianas Complex and establish operations in the Eastern District. The extensive Cerro Negro complex has other deposits and exploration targets, including an open pit mine known as Vein Zone and a cyanide leach processing facility with Merrill Crowe recovery that produces gold recoveries of 90-97%.