Dude, I am so very, very sorry that this happened to you. My brother in law had a fire in his shop and he thought he lost everything too. Once the insurance paid whatever it was that they paid, we spent several weekends helping him go through his tools and stuff. We bought a bench grinder and mounted a polishing wheel on one side and a buffer wheel on the other. We salvaged most of his hand tools and a lot of other stuff by cleaning them as best we could and them using a light compound on them. We finished with a good buff and most of them came out pretty well. Don't despair. Everyone is till alive.
BTW, the worst the place looks when the insurance folks come, the better for you. Let them see it how it really is. Except for the tank. Good luck.