?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Rahman&rft.au=Rahman%2C+Alfi&rft.aufirst=Alfi&rft.inst=Universitas+Negeri+Padang&rft.date=February+2019&rft.degree=Bachelor%2FTugas+Akhir&rft.title=Analisis+Kestabilan+Lubang+Bukaan+dan+Pilar+saat+Proses+Mining+Block+Development+pada+Penambangan+Bawah+Tanah+Metoda+Room+and+Pillar+PT.+Allied+Indo+Coal+(AIC)+Jaya