Tiranda AK, Azikin B. Design of Claystone Selection as Surface Material for Mine Haul Roads at Pit PQRT, Berau Regency, East Kalimantan Province, Indonesia. Journal of Geology and Exploration [Internet]. 2025 Dec. 31 [cited 2026 Mar. 18];4(2):93-101. Available from: https://ejournal.insightpublisher.com/index.php/JGE/article/view/341