Blue Stone / Gabbro

I need info on the feasability of splitting and (http://maplered.com) or cutting (either on site or off) of Stone (http://g603.net) s from an existing bridge and (http://maplered.com) retaining wall (dry stacked). The owner wishes to reuse the Stone (http://g603.net) s as a veneer over structural concrete. We would need Slabs (http://www.VerdeUbatuba.com) from 150 to 250 mm thick. The Stone (http://g603.net) s range from 600 mm to 1200 mm across the face, depth unkown. Total quantity is about 3000 square meters. Any help would be appreciated