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Riza Uripto is a mining engineer with extensive experience in various roles across the mining sector. Currently at Macmahon since March 2018, Riza provides support in data processing, reporting, and design work as a mining engineer, having previously contributed as a pre-contract engineer, where analytical expertise was applied to develop multi-million dollar tender proposals for open-pit gold mines in Indonesia. Prior experience includes roles as quarry superintendent at PT Bruder Konstruksi Nusantara, achieving significant production targets and leading on-site project management. Riza's early career comprises positions at Thiess, PT Energy Management Indonesia, and Aalto University, showcasing a strong foundation in mining engineering principles and research. Riza holds multiple master's degrees from prestigious institutions, including Aalto University and Delft University of Technology, along with a bachelor's degree in mining engineering from Institut Teknologi Bandung.