Conversation so far:
When did Ministry form?
Ministry's origins date to 1978, when Jourgensen moved from Denver to Chicago to attend the University of Illinois at Chicago.
How did Ministry form?
Jourgensen was introduced to the local underground scene by his then-girlfriend Shannon Rose Riley, and in 1979 he replaced Tom Hoffmann on guitars in Special Affect.

Question: When did they all meet?
Self-contained rewrite: When did Ministry all meet?