Lagowa, M. Ikrar, Prodi Teknik Pertambangan, Universitas Jambi
Laksana, Prima, Senior Geotechnical Engineer, PT Arutmin Indonesia – Balikpapan
Lalang, M., GeoEngineering Division, Freeport Indonesia,
Langoy, Jamri, QHSE Operation Supervisor, PT Adaro Indonesia, Tanjung Tabalong, Kalimantan Selatan
Latif, Abdul, Program Studi Teknik Metalurgi, Fakultas Teknik Pertambangan dan Perminyakan, Institut Teknologi Bandung, (FTTM-ITB)
Latif, Anas Abdul
Leong, Jibraella Hanaya, Prodi Teknik Pertambangan, Universitas Trisakti
Lesmana, Agam Diandra, Prodi Teknik Geologi, Universitas Sulawesi Tenggara
Lubis, Herri, Kepala Teknik Tambang PT Banjarsari Pribumi (Titan Global Energy - Coal)
Lubis, Ichwan Azwardi, PT. Timah Tbk
Lubis, Nella Deamora, Drill and Blast Engineer, PT Agincourt Resources
Lukman, Muhamad Nasir, Departemen Perencanaan, PT. Tanjung Alam Jaya (PT Timah Investasi Mineral)
Lukman H., M.A.Prasojo, Geotechnical & Hydrology Departement, PT Berau Coal
Lundeto, Fahri, PT Bukit Makmur Mandiri Utama
Lung, Fellysianus, Dept External Relation PT Kaltim Prima Coal

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