Last seen in:
- The Guardian - Quick crossword No 14,459 - Sep 9 2016
- The Times - Concise - Times Concise Jumbo No 628
- Irish Times (Simplex) - Oct 16 2012
- Irish Times (Simplex) - Sep 10 2011
- Irish Times (Simplex) - Feb 21 2011
- The Telegraph - GK CROSSWORD NO: 71 - Mar 1 2010
- Irish Times (Simplex) - Feb 23 2010
- Irish Times (Simplex) - Apr 18 2009
- Irish Times (Simplex) - Jun 2 2007
- Irish Times (Simplex) - Sep 19 2006
Related Clues:
- U
- Constituent of pitchblende
- Heavy metal
- Curie discovery
- Discovery of 1898
- Curie's find
- Alpha particle emitter
- Metallic element
- Chemical element
- Controversial energy source
- Radioactive element
- Manhattan Project element
- One of the actinide series
- Heaviest naturally occurring element
- Northwest Territories Port