Analisis pengaruh implementasi ISO 9001: 2008 terhadap kinerja operasional penambangan batubara pada kontraktor tambang batubara studi kasus: PT Saptaindra Sejati = Analysis of the effect of ISO 9001: 2008 implementation to coal mining operational performance in the coal mining contractor case study: PT Saptaindra Sejati

Analisis laporan keuangan PT Adaro enrgy Tbk. di tengah fluktuasi harga batu bara dunia (tahun 2014-2018) = Financial statement analysis of PT Adaro Energy, Tbk. and its relations with the fluctuation of world coal prices (year 2014-2018)

Paradoks antara perlindunga lingkungan hidup dengan royalti batubara 0% (Nol Persen) dalam undang-undang Nomor 11 Tahun 2020 tentang cipta kerja = The paradox between environmental protection and coal royalty 0% (Zero Percent) in Law No. 11 of 2020 concerning work copyright

Pengaruh tekanan terhadap kanal ganda bersudut 45° dengan luas tiap kanal 49,5 mm2 pada aerator pump.

Studi Pengaruh Sub Zero Treatment Terhadap Persentase Austenit Sisa Pada Baja HSLA Untuk Mengurangi Delayed Crack Komponen Alat Berat = The Study of Sub Zero Treatment Affecting The Percentage of Retained Austenite in High Strength Low Alloy Steel to Reduce Delayed Crack on Heavy Equipment