Rear End Cleanup, Help?

I am leavin mine dirty and rusty. Screw that. I'm too lazy. LMAO.
Yeah this damned getting old with a dysfunctional back business takes a lot of the fun out of a lot of things. Where I used to work, we had a Quincy Q-40 with a drier and a small pressure blaster. A water tank painting crew left us a whole pallet of ground iron quartz blast media. It was rust colored, felt like baking soda, left steel buttery smooth. I can think of a lot of things I could use that for...