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 [Internet]. 2023 Jan. 22 [cited 2026 Jun. 21];7(1). Available from: https://jistechunipa.com/index.php/istech/article/view/131