Japan Collahuasi Resources (JCR) is a consortium of Japanese companies led by Mitsui & Co., Ltd. The group is involved in the development of copper projects in northern Chile. It holds a 12% stake in Compañía Minera Doña Inés de Collahuasi SCM. Glencore (44%) and Anglo American plc (44%) are the other stakeholders. JCR is developing project Collahuasi phase III, which comprises the addition of two grinding lines to the operation to increase copper output by a forecast 340,000t/y.