Selanjutnya, perseroan bergabung dengan PT Siwani Trimitra Tbk yang kemudian disebut sebagai PT Mitra Investindo Tbk. MITI. Dengan demikian seluruh kontrak Antam dengan Caraka Barata beralih kepada MITI.
PT Caraka later merged with PT Siwani Trimitra Tbk into a company which later became known as PT Mitra Investindo Tbk MITI while Antam's contract with PT Caraka was eventually taken over by MITI.