inspex

Hi all! Does anyone know the proper techniques for finishing a pebble imbedded concrete pool deck when you grind the surface to produce a smooth exposed aggregate? My thoughts are that wet grinding is the way to go. I have a repeat high end client who is having this done and the installer has been working on it since october. Aparently, this is the first time he had done it and is struggling. Any sources to refer to for how this is supposed to be done?