75393229
Nov 20, 1997
Feb 22, 2000
Cleaning of petroleum storage tanks by means of reclaiming hydrocarbons present in tank sludge
Building Construction and RepairTreatment of the internal surfaces of petrol tanks for re-suspending accumulated sludge into the crude oil within the tank utilizing pumping out the crude, covering the sludge and re-injecting it under appropriate pressure
Treatment of Materials