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CRUSHER PRODUCTIVITY ANALYSIS IN COAL PROCESSING TO ACHIEVE MONTHLY PRODUCTION TARGET AT PT JAKSA LAKSA UTAMA SITE PT BGG LAHAT SOUTH SUMATRA. JHSS [Internet]. 2025 Sep. 3 [cited 2025 Sep. 7];2(3):310-5. Available from: https://humaniorasains.id/jhss/article/view/139