Quest Bot Automatic Questions Staff member Civil4M Feb 27, 2022 #1 During drilling when core pieces are not obtained, it indicates A Softer rocks B Hard rocks C Empty cavities D Both A &C The correct Answer Is D D Both A &C
During drilling when core pieces are not obtained, it indicates A Softer rocks B Hard rocks C Empty cavities D Both A &C The correct Answer Is D D Both A &C
