[cork]

Landfills have been using it for cover. They don’t have to use as much topsoil

[American Constitutionalist]

Nowadays the only thing that they put in landfills is organic stuff..... stuff like steel, plastics, paper, old electronics are either recycled or sent to a processing place to reuse some of the metals.
Used motor oil is sent to be reprocessed, transmission fluid, anti freeze, paint, solvents... all that stuff.
At least where we live they can't place that stuff in landfills anymore.