The Telequartz Group of Mining Companies, founded by Joao Cosac in 1920, is Brazils largest, longest-established and best-qualified miner, processor and exporter of rock crystals. Working also with other minerals, the group is the largest exporter of quartz in the world nowadays. Brazil is estimated to have 53 Mmt of reserves representing 95% of the known world supply.

Telequartz Mining Company is an international mining corporation based in the United States. Founded in the early 1900s, the company has grown to become one of the largest producers of precious metals and minerals in the world. The company specializes in the extraction of gold, silver, copper, zinc, lead, iron ore, and other minerals. It operates in various countries, including the United States, Canada, Mexico, Brazil, and Peru. Telequartz Mining Company has a rich history of providing jobs and economic benefits to the communities in which it operates.

The company employs a highly trained and experienced workforce of over 10,000 employees. Its operations are based on the principles of safety, environmental responsibility, and sustainability. The company is committed to the responsible management of its resources and operations, and has taken steps to ensure that its operations are conducted in an environmentally responsible manner.

Telequartz Mining Company is committed to the highest standards of safety and environmental protection. It utilizes advanced technology and equipment to ensure that its operations are conducted safely and efficiently. The company also works with local communities to ensure that its operations are conducted in a manner that benefits the local people and environment.

Telequartz Mining Company is dedicated to providing quality products and services to its customers. It has developed a strong reputation for providing quality products and services to its customers, and for its commitment to the environment and safety. The company is committed to providing the highest quality products and services to its customers, and to meeting the highest standards of safety and environmental responsibility.