Sociedad Minera Corona SA, formerly Dia Bras Exploration Inc, is a Peru-based company engaged in the mining industry. The Company primarily focuses on the development and exploration of mineral sites, as well as beneficiating mineral concentrates. The Company explores own mineral properties in order to produce and sell copper, lead, zinc and silver concentrates. Its operations are established in the Yauricocha mining center, which is located in the mountains near Lima, Peru. The Company is a subsidiary of Sierra Metals Inc.