Khaliq, Nur, et al. “RANCANGAN PENAMBANGAN ENDAPAN BIJIH NIKEL LATERIT DAN ESTIMASI CADANGAN MENGGUNAKAN METODE ORDINARY KRIGING PADA PT. PUTRA DERMAWAN PRATAMA : DESIGN OF LATERITIC NICKEL ORE DEPOSIT MINING AND REVERSE ESTIMATION USING THE ORDINARY KRIGING METHOD AT PT. PUTRA DERMAWAN PRATAMA”. JURNAL TEKNIK PERTAMBANGAN, vol. 25, no. 2, Aug. 2025, pp. 76-83, doi:10.36873/jtp.v25i2.22410.