U R Irfan, - and A Maulana, - and I Nur, - and M Thamrin, - and M Manaf, - (2021) Evaluation of heavy metal (Cu, Pb, Zn) distribution in base metal mining area at Sangkaropi: implication for land use planning. IOP Publishing.
U R Irfan, - and A. M. Imran, - and M N A Abbas, - (2021) Physical and chemically changes in limestone intruded by trachytic dyke: implications for cement raw material. IOP Publishing.
A A Husain, - and I Nur, - and Sufriadin, - and U R Irfan, - (2021) Recommendation for lateritic Ni-ore processing: garnierite mineralogical and geochemical approach. IOP Publishing.
U R Irfan, - and A. Maulana, - and F Muhammad, - (2021) Role of bedrock serpentinization on the development of nickel laterite deposit in Sorowako, Sulawesi, Indonesia. IOP Publishing.
S Onggang, - and A Maulana, - and Sufriadin, - and U R Irfan, - (2020) Preliminary Study of Scandium Enrichment in Lateritic Profile from Weathered Ultramafic Rock in Lapaopao Area Kolaka Regency of Southeast Sulawesi. IOP Publishing.