SIRTU PRODUCTION DETERMINATION BASED ON MINING BREAK-EVEN POINT AT PT. MANOKWARI LEMON ISLAND: PENENTUAN PRODUKSI SIRTU BERDASARKAN TITIK IMPAS PENAMBANGAN PADA PT. PULAU LEMON MANOKWARI. JISTECH. 2023;7(1). Accessed September 28, 2026. http://jistech.unipa.ac.id/index.php/istech/article/view/131