At some of our "big games" the stewarding was well planned, tannoy announcements were made, etc, to try to avoid crushing... but that was not always the case. The Burnley FA Cup game, previously mentioned, and even the Nuneaton FA Cup game with thousands piling in a few minutes before the kick off , looked potentially dangerous - luckily nobody got hurt as far as I know. Whatever the official capacity was at those times, the ground looked packed in all directions from where I was standing.