ADARO INDONESIA sector (Gold, Coal, Nickel, Mangaanese) Ta b a l o n g, Kalimantan Selatan" 2014 "Basic Practical Training and HSE" LPPM UPN "V" Yogyakarta joint study with as an author, with Heru Sigit Purwanto and HMJ Teknik Geologi UPN"V" Yogyakarta PT.