Syafrudin, Sapruddin, and Tenriabeng Mursyid. “PERDAGANGAN BATU PECAH PADA PERUSAHAAN GALIAN GOLONGAN C” 3, no. 1 (July 8, 2022): 33-46. Accessed October 27, 2026. https://www.tadayun.org/index.php/tadayun/article/view/72.