Iugula-Thor "the wheel of process" 12" is one of my all time favorite "industrial-metal" recordings.
If you have only heard the bands PE works (Bloodlust, Jinx, many compialtions), or noise works (GROSS, OEC,..) give still try to this:
http://www.youtube.com/watch?v=ZSewVsIVeJY Unfortunately just the a-side. It combines the atmosphere of religious spiritual music, "CMI" era dark ambient, with sepultura sampling (hah!) industrial metal assaults. It's more industrial than it is metal, but with vocal style and heavy metal guitars in mix, perfect in my opinion. "industrial metal" is much more audible in the b-side hits "Propeller Sodom Lucifer" and "Pigskull Loudspeaker"!
One quite similar track can be found on nearly perfect Tesco release "Assholes", which seems always to be available for cheap (Finnish can check out 2nd hand bin on Sarvilevyt!), but I rate it high!
I think Iugula-Thor would require topic of its own. Band with pretty long history, with plenty of diversity in their discography, and majority of it - unique!