METHANE
| Date | Clue |
|---|---|
| 2026-02-21 | A cow can produce about 200 pounds of it a year |
| 2019-12-07 | Dairy farm product |
| 2018-09-18 | Flammable gas represented in 18-Across and 9-Down |
| 2015-10-11 | CH4 |
| 2015-05-19 | Coal miner's concern |
| 2013-12-23 | Marsh gas |
| 2009-08-30 | Dangerous buildup in a mine |
| 2003-03-28 | Natural gas constituent |
| 2001-12-02 | Marsh gas constituent |
| 1997-03-09 | CH4 |
| 1995-03-18 | Marsh gas, essentially |