Fresnillo plc mines, develops, and produces non-ferrous minerals in Mexico. The company primarily explores for silver, gold, lead, and zinc concentrates. Its flagship project is Fresnillo silver mine located in the state of Zacatecas. The company has mining concessions covering an area of approximately 1.7 million hectares of surface land in Mexico. It also leases mining equipment; produces gold/silver dorÃ© bars; and provides administrative services. The company was founded in 1887 and is headquartered in Mexico City, Mexico. Fresnillo plc is a subsidiary of Industrias PeÃ±oles S.A.B. de C.V.