Wichita Friends - Gas Tank Disposal???

[b-mac]

My friends in the Wichita area (I know you're on here) how do I go about getting rid of an old gas tank?
One of the scrap yards I talked to said I needed to cut a 6"x6" hole in it.
Not sure how to do that and live to tell about it.

I read somewhere about pumping car exhaust into the tank, and that would keep it from exploding when cutting it, but my cajones are too small for that.