US Patent 10023381 Textile silica reduction system

Apparatus for reducing airborne proppant adjacent a fracking material handling system. In some embodiments, a proppant reduction cover is mounted over a first aperture of a proppant storage chamber and has a permeable filter material adapted to facilitate a first flow of displaced air therethrough as proppant is loaded into the chamber. A vent sock is mounted over a second aperture of the chamber and has a permeable filter material facilitate a second flow of displaced air therethrough during the loading of the proppant. A vacuum adapter is mounted over a third aperture of the chamber to apply a negative pressure to an interior of the proppant storage chamber during said loading of the proppant.