CANTERBURY, UNITED KINGDOM - AUGUST 23:  Bull dozers move a mountain of rubbish at the Shelford Landfill, Recycling & Composting Centre on August 23, 2007 near Canterbury, England. The Shelford landfill site, run by Viridor Waste Management receives 200 truck loads of waste weighing 2100 metric tonnes a day.  (Photo by Peter Macdiarmid/Getty Images)