Effect of Water and Chemical Spray on Quality Parameters TM, Ash, and CV of E4700 Product Coal at PT Adaro Indonesia Site Kelanis, South Barito Regency, Central Kalimantan

Rinaldi Suntana | | Universitas Negeri Padang  Indonesia ,
Heri Prabowo | | Universitas Negeri Padang  Indonesia

Optimizing Production by Increasing the Speed of Komatsu HD 785-7 PT Kalimantan Prima Persada Site Indexim Kaliorang, East Kutai, East Kalimantan

Deni Riski Ramadan | | Universitas Negeri Padang  Indonesia ,
Yoszi Mingsi Anaperta | | Universitas Negeri Padang  Indonesia

Mining Activities at the Pit 2 Electrification Mine Location at West Banko PT Bukit Asam, Tbk. Tanjung Enim, South Sumatera

Monica Fadhillah Afrina Wati | | Universitas Negeri Padang  Indonesia ,
Heri Prabowo | | Universitas Negeri Padang  Indonesia

Slope Stability Analysis of Low Wall Pit 6 at Pt Sarolangun Bara Prima, Mandiangin District, Sarolangun Regency, Jambi

Gary Aprio | | Universitas Negeri Padang  Indonesia ,
Yoszi Mingsi Anaperta | | Universitas Negeri Padang  Indonesia ,
Bambang Heriyadi | | Universitas Negeri Padang  Indonesia ,
Heri Prabowo | | Universitas Negeri Padang  Indonesia