"If you can’t make a mess go away, at least you can hide it. Urban renewal can begin by painting murals over graffiti and putting fences around abandoned property. Children often learn that a single heap in the closet is better than a scattered mess in the middle of the floor." 

http://www.laputan.org/images/pictures/reactor4-shirley.gif

"One of the most spectacular examples of sweeping a problem under the rug is the concrete sarcophagus that Soviet engineers constructed to put a 10,000 year lid on the infamous reactor number four at Chernobyl, in what is now Ukraine."

* from - http://www.laputan.org/mud/mud.html#SweepingItUnderTheRug
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