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Once the waste is crushed into very small pieces, it is buried, but without oxygen, a dangerous gas called methane is created. This process is called anaerobic digestion. In some countries, the methane from landfills is used to generate energy.
Large landfills in the United States
Other large landfills
- "Republic Services Roosevelt Regional Landfill". Republic Services. http://www.republicservices.com/site/roosevelt-wa/en/pages/location.aspx. Retrieved 9 February 2014.
- "Denver Arapahoe Disposal Site (DADS) Landfill". Waste Management. http://www1.wmsolutions.com/facilities/details/id/53. Retrieved 9 February 2014.
- "Columbia Ridge Recycling and Landfill". Waste Management. http://wmnorthwest.com/landfill/columbiaridge.htm. Retrieved 9 February 2014.
- "Pine Tree Acres Landfill". Waste Management. http://pinetreeacreslandfill.wm.com/index.jsp. Retrieved 8 February 2014.