Sources

• 2007 Mining Explained: a layman’s guide. James Whyte and John Cumming, Editors. Published by The Northern Miner, the Global Mining Newspaper. Glossary pp. 115 — 146.
• 2006 The World Nuclear University Primer, Nuclear Energy in the 21st Century. Ian Hore-Lacy. World Nuclear University Press. Glossary pp. 161-166.