Abstract: The present invention provides a heat radiating shield which both prevents the dripping of grease onto the gas burners of the barbecue and provides an even transfer of heat to the cooking area. The invention comprises a smoothly curved, upwardly concave tray which is positioned between the burners and the food-supporting grate. Drippings are trapped in the tray and are not permitted to run out of the tray.

Abstract: This invention relates to a hydrometallurgical process for the treatment of mercury contaminated muds. More particularly, this process pertains to a hydrometallurgical process for the treatment of Environmental Protection Agency designated K106 muds discharged from a mercury chlor-alkali plant.

Abstract: A hollow lighting structure having an optically transmissive light emitting surface. At least one light guide extends within the structure. A light source emits light into the light guide. The light guide's light transmissivity is varied as a function of position on the surface of the light guide such that the angular and spatial distribution of light emitted from the light guide yields a predetermined distribution of light intensity as a function of position on the light emitting surface. The predetermined distribution of light intensity is preferably substantially uniform at all points on the light emitting surface.