ice asteroids as structural material

I did a bit more searching around, and found what I was thinking about: http://www.neofuel.com/iceships/ This is from Anthony Zuppero, the guy who promotes "neofuel" and nuclear steam rockets.

Regards,
Mike Combs

You know, a while back there was a paper which proposed building an enormous torus for some kind of crewed exploratory ship by deploying a balloon form and then pumping it full of water and letting it freeze to ice. I just did a search on space.com, but couldn't find the article I was thinking about there.