Disgusting, Rusted HO Flood Locomotive - Can We Make It Run?

A few months ago I was on eBay and a listing caught my eye because it included three very rusted out locomotives. I won the auction and the locomotives showed up around a week later.

There is no telling what exactly happened but I suspect they were probably involved in a flood at some point. I've never seen so much rust on an ho scale locomotive in my life.

With some unusual techniques I was able to remove most of the rust but getting the locomotive actually running was a whole other matter.