Sadr Tamin Investment Company (Public Joint Stock Company), operating under the TASICO brand, is the specialized mining and mineral-industries holding within the Social Security Investment Company (SHASTA) group. Established in 1999 and listed on the Tehran Stock Exchange, TASICO invests in, owns, governs and develops a diversified portfolio of operating companies, associated companies, strategic equity interests and development projects across selected segments of the mining and mineral industries.