rsupwoods,
Have you honestly posted on here to 'correct' everyone based solely upon an EBay description of the component? It's a compressor blade, as evident from the coating, the shape and the lack of tip shroud or cooling holes.
Notwithstanding this, hopefully it'll simply be a case of coincidence, El Grifo. Thinking about it, RAF Cosford are still, to this day teaching blade blending techniques on Turbomeca Adour compressor blades which are also coated with grey Rockhard, so I'd imagine that the H&S implications have been looked at somewhere along the line. I'd still suggest Courtney's advice is worth following though, if only to set your own mind at rest.