[Kretek]

Later, word came that what was in the tank was phosphoric acid, sulfuric acid, acetic acid, hydrofluoric acid and ammonia, with the acid at only 10 percent concentration.

Err, what was the ammonia doing in there? They were trying to neutralize the acids?

[glock rocks]

The other local paper said vinegar... (yep - acetic acid sounds more likely than ammonia). Kennecott Copper, who contracted the service, says all that should have been there was sulphuric acid.