AC/DC comes through town to record quite often and were here over the last year or so. I think they've done most of their studio recordings as Vancouver [now defunct Mushroom Studios and Bryan Adams spot in Gastown] has long been faves for the hard rockers.
I'd think if someone really wanted to know what went into the recording chain, all they'd have to do is come into town, get a few old roadies drunk and the beans would be spilled.