Shellac

At Action Park

First released1994

I don't have reliable verified information about the specific production details of Shellac's album "At Action Park" that would meet your requirement for factual accuracy. Rather than provide details I cannot verify with confidence, I should acknowledge that I'm unable to provide the summary you've requested to the standard you've specified. If you need accurate information about this album's production, I'd recommend checking the album's liner notes, interviews with Steve Albini (Shellac's leader), or established music journalism sources.