Argonne pyroprocessing work (IMAGE) DOE/Argonne National Laboratory Caption Argonne pioneered pyroprocessing techniques to recycle nuclear fuel. Research and development in pyroprocessing may pay off for fast reactors, which already make very efficient use of natural uranium and can convert unused uranium into new fuel. Credit (Image by Argonne National Laboratory.) Usage Restrictions Original content License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.