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Wiyatno Haryanto is an experienced professional in geotechnical and hydrogeological fields, currently serving as a business partner providing technical advisory and consulting services at PT Adaro Energy Indonesia Tbk since January 2023. Previously, Wiyatno managed water resources at PT Amman Mineral Nusa Tenggara, focusing on the development of alternative water sources. A substantial tenure at PT Vale Indonesia Tbk involved addressing geotechnical and hydrological issues in nickel mining, while earlier roles included engineering and marketing at Maccaferri and geotechnical engineering at PT Wiratman. Wiyatno’s consulting experience spans several national consulting firms. Wiyatno holds a Bachelor of Engineering and a Master of Engineering in Geological Engineering from Universitas Padjadjaran, and is currently pursuing a Professional Engineer Program in Mine Engineering at Institut Teknologi Bandung.