1. Ph.D. Student, Dept. of Mining, Metals and Materials Engineering, McGill Univ., 3450 University St., Montreal PQ, Canada H3A 2A7; formerly, M.Eng. Student, Concordia Univ., Montreal PQ, Canada H3A 1M8.
2. Professor, Dept. of Mining, Metals and Materials Engineering, McGill Univ., 3450 University St., Montreal PQ, Canada H3A 2A7 (corresponding author). E-mail: hani.mitri@mcgill.ca
3. Professor, Dept. of Building, Civil and Environmental Engineering, Concordia Univ., 1257 Guy St., Montreal PQ, Canada H3G 1M8.