Abstract: An endless conveyor belt apparatus is employed for moving raw materials which are characterized in having fines associated therewith from one point to another. The apparatus includes a silicone-emulsion spraying device for applying an aqueous solution of the silicone-emulsion to the material supporting side of the endless belt in sufficient concentrations to promote the release of the fines from the belt when the material being conveyed is dumped, thereby preventing the undesirable build-up of fines on return idler rolls and beneath the belt at points along the belt's return path.

Abstract: Fluid-driven air-pumping and mixing apparatus for pumping air into a high methane environment and mixing ambient airborne impurities with such fluid for diluting the same. The apparatus includes a divergent mixing chamber proximate the outlet of the apparatus and a fluid dispersing nozzle having a configuration and location relative to the mixing chamber for maximizing air flow through the apparatus as well as providing a subsidiary advantage of increasing mixing of the driving fluid with the airborne impurities.