Jim,
I have one warning I'd like to make regarding metal fuel cans; there were a few articles not too long ago referencing metal fuel cans that blew up, or burned pretty viciously.

Apparently there was a sligth spark discharged as the can's top was unscrewed. Now, I believe these incidents involved cans that had not been opened in a while. So perhaps there was some corrosion that caused some restriction when opening the cap, and this is what caused the spark.

I just thought I'd mention it.
Dennis-