Clue: Controversial refrigeration gas
Controversial refrigeration gas is a crossword puzzle clue that we have spotted 4 times. There are related clues (shown below).
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Recent usage in crossword puzzles:
- Washington Post - June 23, 2015
- Pat Sajak Code Letter - June 16, 2012
- USA Today - June 2, 2010
- LA Times - Sept. 24, 2006