Grinding Mills | Osborn South AfricaManufacture of Large Ball Mill Shell. Inside a large SAG Mill. New Concept Projects formed a Joint Venture Agreement with Osborn and now supply the new Osborn Grinding Mill Range. Our capability includes the supply of new mills, based on existing proven Osborn designs, engineered with assistance of modern design.ball mill companies in south africa,Ball Mills < Crushers, Mills & Grinders - EngNet South AfricaBall Mills from the EngNet Engineering directory and search engine. Find suppliers, manufacturers and distributors for Ball Mills.