Abstract: An infant container which may be in the form of a crib mattress and crib bumper assembly having means defining one or more gas flow channels which permit any concentration of heavy gases to drain by gravity from the upper surface of the crib mattress and be replaced by the environmental air of the room in which the crib is located. The gas flow channels may be defined by the crib mattress, the crib bumper or the structure of the infant container or may be defined by a structural element that elevates a conventional crib bumper above the upper surface of a conventional crib mattress and which defines at least one and preferably a multiplicity of gas drain channels. The heavy gases may be dissipated from the infant container by gravity induced gas flow.

Abstract: A method and apparatus is provided for accomplishing thermal separation of various hydrocarbons and other compounds from coal, a hydrocarbon rendering module is provided for the continuous agitation and circulation of coal during the rendering period and utilizes thermal trays having stationary and revolving apparatus to improve heat transfer to coal particles and minimize rendering time. Portions of the rendered hydrocarbon products are recycled to the mechanism as an energy source for continuous operation.