LOL... Oil bio degradation as it was called - took many forms where early mineral oils were disposed of to degrade naturally. When I was a kid in the 1960's we lived on a dirt road and when the road got dusty my Dad would call the TWP and shortly thereafter the oil truck came and sprayed the road down with recovered oil.
Typically kept the dust in check for an entire month!
Government (DOE) was still using oil bio degradation plots as late as the 1980's. Efficiency was calculated at 55-82% after 1 year.
|