A surgical device for manipulation of an implantable medical device includes a surgical tool and a controller. The cementitious systems of the invention may be in the form of mixtures which increase the total solar reflectivity and the Solar Reflectance Index of concrete are provided. This invention also relates to a fuel injector seat and method of manufacturing the fuel injector seat, and a method of evaluating when the transition portion is required between the orifice and needle-sealing portions for a particular seat arrangement.