Council bosses in Lincolnshire have started off a new campaign, encouraging people to recycle their waste properly, saying that just one item in a wrong bin means that the whole lot has to be sent to landfill.
They say while it is only a small minority of people who do not understand the system - it can have a major impact on keeping the system working as James Webster now reports.
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Former Police Inspector Harry White told the inquests that he was told that fans entering the terraces should "find their own level."
A former police inspector has told the inquests he realised fans entering through an exit gate would head towards already crowded pens.