Rich Thorium Vein
This object can be found in Burning Steppes (240), Eastern Plaguelands (80), Winterspring (65), Un'Goro Crater (41), Azshara (28), Silithus (15), Western Plaguelands (11), Feralas (4), Tanaris (4), Blasted Lands (4), Swamp of Sorrows (3), Deadwind Pass (2), Elwynn Forest (1) and Stranglethorn Vale (1).