Pamapersada Nusantara
Jonathan Chiston Silaen is a skilled Mine Plan Engineer with extensive experience in the mining sector, currently serving in the Engineering Division at Pamapersada Nusantara since January 2018, initially joining as a Fresh Graduated Trainee. Prior experience includes an On Job Training role at Thiess, where responsibilities involved planning blasting patterns and measuring ground vibrations, as well as an internship at PT. ASMIN BARA BRONANG focused on analyzing the productivity of heavy machinery. Jonathan Chiston Silaen holds a Bachelor's Degree in Mining Engineering from Universitas Palangkaraya and a Master's Degree in Geomechanics from Institut Teknologi Bandung.
Pamapersada Nusantara
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PT Pamapersada Nusantara (PAMA) is a wholly-owned subsidiary of PT United Tractors Tbk, a major distributor of Komatsu heavy equipment in Indonesia. PT Astra International Tbk, the major shareholder of PT United Tractors Tbk, is one of the largest and most respected companies in Indonesia. The embryo of PAMA has commenced since 1974 in form of rental division at PT United Tractors, which engaged in construction project, mining and oil project, land preparation and logging. In 1993 this division changed into an independent company named PT Pamapersada Nusantara. Currently PAMA actively manages numerous coal mines. PAMA has also own some subsidiaries, under the name of PT Kalimantan Prima Persada (KPP) and PT Prima Multi Mineral (PMM).