The equivalent of 75,000 55-gallon barrels of waste thought to contain transuranic waste are stored underground at Hanford .
The equivalent of 75,000 55-gallon barrels of waste thought to contain transuranic waste are stored underground at Hanford .
The equivalent of 75,000 55-gallon barrels of transuranic and low-level radioactive waste , some of it mixed with hazardous chemicals , is buried at Hanford .