The Database
Every nitrogen execution. On the record.
Eight men have been killed by nitrogen gas in the United States between January 2024 and October 2025. Every case is documented here from the primary record — court filings, protocols, autopsies, and eyewitness testimony compiled in Rev. Dr. Jeff Hood's Suffocation by Design.
Kenneth Eugene Smith
The first person in world history put to death by nitrogen hypoxia.
- State
- Alabama
- Age
- 58
- Years on Row
- 34
Alan Eugene Miller
The second nitrogen death — of a man Alabama had already tortured once.
- State
- Alabama
- Age
- 59
- Years on Row
- 24
Carey Dale Grayson
Defiance, normalization, and the third nitrogen death.
- State
- Alabama
- Age
- 50
- Years on Row
- 28
Demetrius Terrell Frazier
Interstate custody, gubernatorial silence, and the fourth nitrogen death.
- State
- Alabama
- Age
- 52
- Years on Row
- 29
Jessie Hoffman Jr.
Louisiana's first nitrogen execution — the method crosses state lines.
- State
- Louisiana
- Age
- 46
- Years on Row
- 27
Gregory Hunt
Pro se, 35 years on the row, 'no pity party.'
- State
- Alabama
- Age
- 65
- Years on Row
- 35
Geoffrey Todd West
Forgiveness from a victim's son — and 'the least movement,' the state said.
- State
- Alabama
- Age
- 49
- Years on Row
- 27
Anthony Boyd
The longest yet. Sotomayor's dissent named what the state would not.
- State
- Alabama
- Age
- 54
- Years on Row
- 30