[1]Norman B.Keevil Institute of Mining Engineering;
University of British Columbia;
Vancouver V6T 1Z4;
Canada;
[2]School of Mining and Petroleum Engineering;
University of Alberta;
Edmonton T6G 1H9;
Canada;
[2]School of Mining and Petroleum Engineering;
University of Alberta;
Edmonton T6G 1H9;
Canada;
Measurement while drilling; Fractures; Rotary blasthole drill; Drill performance variables; Fracture frequency; Logging;