FADHILAH, A.; AH MIRUL. Pengaruh dan Korelasi Analisis Proksimat (MAD, VM, Ash dan FC) Terhadap Nilai Hardgrove Grindability Index (HGI) Batubara di PT. Bukit Asam, Tbk. Jurnal Ilmiah Teknik dan Sains, [S. l.], v. 1, n. 2, p. 79–86, 2023. DOI: 10.62278/jits.v1i2.15. Disponível em: https://jurnal.akipba.ac.id/index.php/JITS/article/view/15. Acesso em: 21 oct. 2026.