Indeed...I am a fan of most of Mick Harris' work (except the Napalm Death era which I have never sat down and listened to although I am told his drumming is ferocious).
My fave Lull album was "Cold Summer". The reason I say 'was' is because some no-good rottern so-and-so has borrowed it permantly! Sadly the disc is out of print, one of these days I will make an effort and seek it out.
Do you listen to Mick's other work? Scorn is just amazing and the disc he did under the guise "The Weakener" (on Wordsound) is a gem - extremely slow 'dark hop' I think best explains it. It has Mick's trademark drifts and drones, fractured beats as well as his signature sub-bass. Love it!
If you haven't already, do check out the stuff he has done with Bill Laswell and Eraldo Bernocchi called "Equations of Eternity". They have two albums out on Wordsound also and they are fanastic dub-workouts.