NOOC (orkish caves in Dunland), in rack guarded by chieftain. Chieftain blocks exit to bhsb, but he is a wimp, he shoots and flees around, so just lure him away if you can't kill him.
In the skeleton where The (not “a”) Dwarven Statue loads, in Dunland
On experienced explorers (one near elven camp, ABR - another, Fangorn) - actually I believe these are the same, he just wanders a lot and loads randomly
In corpse behind hidden 'stone' guarded by cavebear southwest from Isengard.