There is such a thing, literally, as 'white trash'.
During clean up from natural disasters, mainly hurricanes and floods, debris to be picked up should be divided into 'Green Waste' (vegetation, lumber, uprooted trees/stumps, etc.), and 'White Goods' (appliances).
The other major classification is 'C&D', Construction and Demolition debris. This includes brick, concrete, steel, roofing shingles, etc. All most any construction materials but untreated wood.
"By October 2005, the Louisiana DEQ estimate of the amount of debris in New Orleans alone was 55 million cubic yards. They also estimated that it would take about eighteen months to dispose of it. The cost to remove this debris, according to the Army Corps of Engineers, is generally $10-20 per cubic yard for regular debris, but can be significantly higher for hazardous material and contaminated debris.
As of June 2006, FEMA has given $403.6 million for debris removal in the New Orleans metropolitan area. As of April 10, 2006, the following parishes have received several grants: St. Bernard Parish, three grants totaling $88.6 million; St. Tammany Parish, three grants totaling $65.7 million; Jefferson Parish, $50.8 million; Plaquemines Parish, four grants totaling $24.5 million; Washington Parish, two grants totaling $9.7 million."
http://web.mit.edu/12.000/www/m2010/finalwebsite/solutions/shortterm/debris.html