Cameron, "Recent mining developments on the Ravenswood Gold Field", p.4 Ravenswood Conservation Management Plan, p.25 In 1902-3, a raff wheel, 14 meters in diameter, was built at the Mabel Mill to lift tailings (post-treatment residue) up to a flume, which carried them over to the south side of Elphinstone Creek, where they could be treated with cyanide.