https://www.dailymail.co.uk/news/articl ... chair.html
Meet Mr. Death, the SELF-TAUGHT execution expert: Man who built Tennessee electric chair that was just used to kill a prisoner is the son of a prison guard whose career imploded when he was exposed as a Holocaust denier
As debate swirled about the use of an electric chair during a Tennessee execution Thursday night, there was even more controversy surrounding the self-taught man dubbed 'Mr. Death' who built the device.
For nearly three decades, self-taught execution expert Fred Leuchter Jr had a successful career in the business where he had a specialty of devising, selling and installing equipment for carrying out executions. Besides building electric chairs, Leuchter also built, refurbished and consulted on gas chambers, lethal injection machines and gallows.