Gas chamber Gas chamber A gas chamber is an apparatus for killing humans or other animals with gas, consisting of a sealed chamber into which a poisonous or asphyxiant gas is introduced. The most commonly used poisonous agent is hydrogen cyanide; carbon dioxide and carbon monoxide have also been used. Gas chambers were used as a method of execution for condemned prisoners in the United States beginning in the 1920s and continue to be a legal execution method in three states. During the Holocaust, large-scale gas chambers designed for mass killing were used by Nazi Germany as part of their genocide program.
Sensation Lawn Mowers as greaseable wheels, thick cast aluminum decks, and some unique innovations like a cone-shaped metal crankshaft support which was purported to help prevent bending of the crankshaft. Sensation Lawn Mowers Sensation Lawn Mowers was a commercial lawnmower brand created by Howard Phelps in 1944. The Sensation Lawn Mower Company was located in Ralston, Nebraska, USA. Howard Phelps received patent number 2,265,545 on his mowing machine, which featured a rotary cutting blade directly driven by an industrial quality electric motor in 1941. This very prototype still exists and is on display at the Pioneer Village Museum in Minden, NE. The Sensation