Geophysical campaigns based on measuring the electrical resistivity were conducted for determining the volume of massive rocks and usable concepts three separate sites (Ayame, Bouake and Ferkessedougou). The analysis of resistivity maps shows the areas Presence conducive to the exploitation of granite quarries. Have electrical surveys helped determine the Roof depth, power and geometry of exploitable rock. And compared to other, Bouaké Is The Most Interesting site with 465349.862 t as the exploitable volume of rock, Follow That of Ayamé Who offers 352042.753 t. Finally, the site Ferkessédougou meanwhile Supplied 317245.202 t of solid rock.