Found the topic online as well.
Link to online version of the story: Lethal injection creator: Maybe it's time to change formula
A story on Fox earlier in 2007: Lethal Injection Father Defends Creation
At the end of the Fox online story, Dr. Chapman says:
"There is absolutely nothing wrong with the guillotine," he said impatiently. "It can be operated by an idiot and it is a very effective instrument."
You often hear talk of death penalty executions being painless. A curiosity question. How does one actually go about determining that it is painless? You can't ask those that were executed.
Missouri's Old Gas Chamber built in 1937. The site of 40 executions.