(under the class definition) Method or apparatus concerning the treatment or elimination of a waste material involving its deposition in an earth formation.
(1) Note. Included in this subclass is the remediation of soil.
SEE OR SEARCH CLASS
166, Well,
305.1, for a process utilized in the removal of a fluid from its naturally occurring location in the earth which includes the step of causing another fluid to enter the pores of the earth.
210, Liquid Purification or Separation,
749+, for a chemical treatment process. 588, Hazardous or Toxic Waste Destruction or Containment,
249+, for the containment of hazardous or toxic waste in earth formations.