A type of rock started in the mid to late 70's by Throbbing Gristle. It was different from other rock because it incorporated the sounds of machinery into the music. It also had very heavy lyrics. It has traces of techno and electronica.
Industrial bands are
Throbbing Gristle, Suicide,
Cab Voltaire, Einsturzende Neubauten, Skinny Puppy, KMFDM, Nine Inch Nails, Mesh, Front 242, Wumpscut, VNV Nation, Ministry, Gothminister, Pig, Dkay, Skillet, Mortar, and Newlydeads.
please see industrial
for an example please see industrial