After Suharto replaced Subroto as commander of the Army's Diponegoro Division, Hasan worked with Suharto to develop a wide range of side businesses, controlled by the military, that provided much of the funding for the Division as well as extra income for its officers. After Suharto
took the presidency in 1966, he initiated a massive expansion of Indonesian commercial logging, especially in the islands outside of
Java. In the 1970s, Hasan served as the required Indonesian "partner" for foreign companies wanting to harvest timber in Indonesia, working most notably with the
United States corporation
Georgia Pacific, and also established a number of joint ventures between his and government-owned companies. In 1981 the government banned the export of unmilled timber, leading to many foreign companies selling their Indonesian operations to domestic owners interested in establishing processing operations; Hasan, already a major shareholder in Georgia Pacific's Indonesia operation, became its sole owner when the company left Indonesia in 1983. Hasan's Kalimanis group was reported to control over 2 million hectares (7,700 square miles) of prime concessions in
Kalimantan. Hasan ran PT Nusantara Ampera Bakti (Nusamba) which is 80%-owned by foundations controlled by Suharto. Hasan became the mediator in business disputes between Suharto's six children, after the death of Suharto's wife in 1996. ==Trade and industry minister==