
Veriyadi, CEO of PT Grabuma, spoke at the International Mineral Asset Valuation event held in Sandton, Johannesburg, South Africa. The event was organized by International Mineral Valuation (IMVAL), CIMVAL of Canada, VALMIN of Australia, and SAMVAL of South Africa, and took place from October 1 to 3, 2025. Veriyadi introduced a new method for valuing exploration projects called hybrid net present value (NPV), which combines artificial intelligence with metaheuristic models. The study concluded that Hybrid NPV is more accurate in predicting NPV compared to classical NPV. This method improves upon probabilistic approaches and can serve as a reference for valuing initial exploration projects.

