Abstract: An improved rotating throat/air port ring assembly is described for use in a pulverizing mill of the type including a rotating bowl member in a housing. The improved assembly includes (1) a vaned throat/air port ring element secured to the periphery of the bowl and including vanes which are tilted 20.degree. to 40.degree. from vertical, (2) an inclined liner extending around the bowl above the ring element, and (3) a skirt extending outwardly and downwardly from the ring element to guide inlet air through the vaned throat/air port ring element.