Original: In 1961, the British Atomic Energy Authority (UKAEA) was able to produce 125 grams of 99.9% pure protactinium by processing 60 tons of waste material in a 12-stage process.
Simplified: In 1961, the United Kingdom Atomic Energy Authority was able to produce 125 g of 99.9% pure protactinium, processing 60 tons of waste material in a 12-stage process and spending 500,000 USD.