Harsco Minerals International, formerly Reed Minerals, Excell Minerals, and Performix Technologies is the world's largest manufacturer of BLACK BEAUTY® abrasive products, third largest manufacturer of BLACK BEAUTY® headlap and backsurfacing roofing granules, leading producer of specialty metallurgical additives, and provider of AgrowSil™, Excellerator™, and Mineral CSA. Former products include RecLime® and RecMix®.