The Industrial Revitalization Corp. of Japan plans to assist Mitsui Mining Co. under its rescue program, sources said Tuesday.

The IRCJ is expected to formally decide Monday to help revive the natural resources firm by holding a meeting of the industrial revival committee, the body's decision-making organ, the sources said.

The decision comes as the New Energy and Industrial Technology Development Organization, an affiliate of the Ministry of Economy, Trade and Industry and a major creditor of the firm, has agreed to waive part of the loans it holds, the sources said.