I was killing them for faction and noticed that they have a nice drop rate on Randomly generated items. Most of the golems in the crater do for that matter.
After killing about 60 golems I had 8-10 randomly generated items. I cannot salvage so I am unsure as to how well they can be salvaged. When I have time I will have a friend salvage some to find out if this is a good spot to farm loot.