The project began as a practical demonstration to investigate the concept of milling solid waste for landfill disposal without applying daily cover. The project was intended to gather data on the operation and cost of milling equipment, the use of milled solid waste in a landfill, and the characteristics of milled solid waste--all from a practical standpoint. Eventually, however, project personnel carried out detailed investigative work on both milled and unprocessed solid waste. To determine whether landfilling milled solid waste lived up to the approval given by European landfill operators, it became necessary to design experiments involving rats, flies, leachate, gas, trees, etc. in hopes of quantifying such factors.