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“Efisiensi Kerja Alat Muat Komatsu PC 400 LC Guna Memenuhi Kebutuhan Produksi Stone Crusher: Efficiency of Work of Komatsu PC 400 LC Loading Equipment to Meet Stone Crusher Production Needs”, JISTECH, vol. 14, no. 2, pp. 1–8, Nov. 2025, doi: 10.30862/jistech.v14i2.894.