30 1 20 GEOSTATISTICAL ORE RESERVE ESTIMATION Developments in Geomathematics 2. MICHEL DAVID Primary Author mixed material Amterdam Elsevier Scientific 1977 Update of mineral resources & ore reserves PT ANTAM (Persero) Tbk as at December 31st 2016 PT Aneka Tambang Tbk Primary Author mixed material 2016 Annual Mineral Resources & Ore reserves Statement As per December 31st 2018 PT Aneka Tambang Tbk Primary Author mixed material 2018 Resources and Reserve Statement Report as of December 31st 2018 PT Aneka Tambang Tbk Primary Author PT Bukit Asam Primary Author PT Timah Primary Author PT Freeport Indonesia Primary Author PT Inalum Primary Author mixed material 2018 Antam Mineral Resources & Reserves Statement as of 31 December 2023 PT Aneka Tambang Tbk Primary Author mixed material 2023 PT. ANTAM Tbk & SUBSIDIARIES BAUXITE RESOURCES & RESERVES STATEMENT As per March, 31st 2019 PT Aneka Tambang Tbk - Unit Geomin Primary Author mixed material 2019 Mineral Resources & Mineral Reserves Statement as of 31 December NICKEL BAUXITE GOLD 2020 PT Aneka Tambang Tbk Primary Author mixed material 2020 Laporan Sumberdaya & Cadangan Mineral Antam Per 31 Des 2022 Antam Mineral Resources & Reserves Statement As of 31 Dec 2022 PT Aneka Tambang Tbk Primary Author mixed material 2022 Problems in Estimating Ore Reserves On Some Current Exploration Targets Mr Brian Hester Primary Author mixed material Resources & Reserves Statement Report as end of 2021 PT Aneka Tambang Tbk Primary Author Mind Id Primary Author mixed material 2021 Australian Code for Reporting of Exploration Result, Mineral Resources and Ore Reserves The JORC Code Primary Author mixed material 2004 Laporan Rekonsiliasi Estimasi Sumberdaya dan Cadangan Bijih Emas PT Sumberdaya Cibaliung (Resources and Reserves) 31 Desember 2015 PT Aneka Tambang Primary Author mixed material 2015 Report Gosowong Ore Reserve End December 2011 Report Number: Gosowong OR 11-12 L1_2 Newcrest Mining Limited Revision Final Issued 8 Februari 2012 Document Owner: Allan Blair Newcrest Mining Limited Primary Author mixed material 2012 Laporan Rekonsiliasi Estimasi Sumberdaya dan Cadangan Bijih Emas Pongkor (Resources and Reserves) per 1 juli 2015 PT Aneka Tambang Primary Author mixed material 2015 Mineral Resources & Ore Reserves Statement as per December 31st, 2019. Nickel Bauxite Gold PT ANTAM Tbk Primary Author mixed material Jakarta PT. Antam Tbk 2019 Review of mineral resources and ore reserves PT Antam as at 31 december 2005 Sutioso, Trenggono Primary Author mixed material Jakarta Antam – Unit Geomin 2006 2019100162.jpg.jpg Ore reserve optimization Dan Nilsson Primary Author mixed material 1993 Materi kursus reserve modelling for mining geology Gatut Adisoma Primary Author Waterman Sulistyana Primary Author mixed material Yogyakarta GEOSEA 2001 Statement of mineral resources and ore reserves as at 31 march 2001 Unit Geomin Primary Author mixed material Jakarta Antam – Unit Geomin 2001 Review of mineral resources and ore reserves PT. Antam Tbk as at 31 december 2004 Unit Geomin Primary Author mixed material Jakarta Antam – Unit Geomin 2005