Operational Mines

Planchas de Plata (Spanish for slabs of silver), sometimes called Bolas de Plata (balls of silver) is a historic silver-mining district near Nogales, Sonora, Mexico, and a few miles south of the border with the US state of Arizona. Native silver was discovered here in 1736 by Antonio Siraumea, a Yaqui Indian, on the Rancho Arizona of Bernardo de Urrea. Historian Donald Garate believes Urrea's...

The Polkowice-Sieroszowice mine is a large mine in the west of Poland near Polkowice and Sieroszowice, Polkowice County, 350 km south-west of the capital, Warsaw. Polkowice-Sieroszowice represents one of the largest copper and silver reserve in Poland having estimated reserves of 387 million tonnes of ore grading 2.65% copper and 54 g/tonnes silver. The annual ore production is around 11...

The Prominent Hill Mine is a major copper, silver, and gold mine in north west South Australia, 130 km south-east of Coober Pedy, which has been developed by Oxiana Limited, later to become OZ Minerals. The deposit is an iron oxide copper gold style mineralisation.

The mine, which cost A$1.15 billion to develop, was projected to produce 100,000 tonnes of copper and 115,000 ounces of gold in...

Real de San Juan Bautista de Sonora was the location of one of the first silver mines in Sonora, then part of New Spain.

Now ruined, it lies near to the town of Cumpas, founded in 1643 by the Jesuit missionary Egidio Monteffio.

The name of Sonora seems to have first been given to the principal valley or to the San Juan Bautista mining district, and later was used for the whole province.

Rich...

The San Cristobal mine in Lipez, Potosí Department, Bolivia is an open-pit silver, lead and zinc mine near the town of San Cristóbal, Potosí. The mine, operated by Sumitomo Corporation, produces approximately 1,300 metric tons of zinc-silver concentrate and 300 tons of lead-silver concentrate per day, as of August 2010, by processing 40,000 to 50,000 tons of rock. It is one of Bolivia's...

Thundelarra is primarily an Australian gold exploration company. Gold, either in stand-alone geological settings or in association with copper, is our principal target. Copper remains an important focus too. Our portfolio also boasts prospects with discovery potential for base metal (nickel, zinc, silver, lead), uranium and graphite mineralisation. We are active in Western Australia (WA) and...