Ground Fault artists:  

Phroq
Guilty Connector/Utsu Tapes
Murmer
Contagious Orgasm/SSSM

R.H.Y. Yau
Lockweld

Daniel Menche
Bastard Noise

Alain de Filippis
SICKNESS
K.K. Null
Jazzkammer
Ground Fault related:  
Auscultare Research/R.H.Y. Yau
Spastic Colon
Pinch A Loaf
Errant Bodies
Other labels and record stores:  

23five
Alienation/Thirdorgan

Harbinger Sound
Alchemy Records
Alien8 Recordings
Apop Records

Aquarius Records
Crippled Intellect Productions
Erstwhile Records
Xerxes/Government Alpha
Freak Animal
Troniks
Cohort Records
Metamkine

P-Tapes
RRRecords
Solielmoon Records
Intransitive Recordings
Generator Sound Art
Cold Spring
Noise Taiwan
Old Europe Cafe

Sirr
Self Abuse Records
Staalplaat

Genderless-Kibutz
Manufracture
Verge Music Distribution

Whitehouse/Nurse With Wound/Come Org./Susan Lawly:  

Susan Lawly
Sucliffe Jugend

M.B.

Trevor Brown

Whitehouse
Nurse With Wound
World Serpent Distribution
Other artists:  
Masonna (Maso Yamazaki)
Helicopter/John Wiese
Steve Roden
Das Synthetische Mischgewebe

Suspicion Breeds Confidence
Brutum Fulmen
Francisco Lopez
Haters

Resources:  

LA Sound Calendar
Hertz-Lion
Quiet American

All Music Guide
7hz
Parabolic Productions