@article{paperid:1049171, author = {Afshar, Salameh and Ghafoori, Mohammad and Lashkaripour, Gholam Reza and Hafezi Moghaddas, Naser}, title = {The Evaluation of Drillability and Support System Type in Western to Southern Part of Mashhad Rock Mass Based on Rmi Classification}, journal = {Indian Journal of Natural Sciences}, year = {2015}, volume = {6}, number = {31}, month = {August}, issn = {0976-0997}, pages = {9447--9457}, numpages = {10}, keywords = {Rocks of southern Mashhad; Rock quality designation (RQD); Drillability; Rock Mass index (RMi); Support system}, }