There is a hidden path where a lot of us find our roots.
throbbing gristle - hot on the heels of love 1979 - YouTube 1979
Throbbing Gristle - What a Day - YouTube
1979
Liaisons Dangereuses - Los Ninos Del Parque - YouTube 1981 as sampled by Carl Craig and others
SPK - Day of Pigs - YouTube recorded 81

And it isn`t in Detroit.

This is more of a root of the textural, abstract, dark side of techno, that is seeing a particular (albeit very bland) resurgence from the post Berghein/Minimal side of techno, but can be traced back to early surgeon, regis, obscurum etc