, R & D Centre for Mineral and Coal Technology (Puslitbang Teknologi Mineral dan Batubara), Indonesia

• Indonesian Mining Journal Vol. 21 No. 2 (2018): INDONESIAN MINING JOURNAL, Vol. 21 No. 2, October 2018 - ARTICLE
  CEMENT MATERIAL DEVELOPMENT USED FOR CEMENTING UNDERGROUND COAL GASIFICATION WELL
  Abstract  PDF
• Indonesian Mining Journal Vol. 22 No. 2 (2019): INDONESIAN MINING JOURNAL, Vol. 22 No. 2, October 2019 - ARTICLE
  STUDY ON REDUCTION OF IRON ORE CONCENTRATE IN ROTARY KILN TO PRODUCE DIRECT REDUCED IRON
  Abstract  PDF