Gas chamber carbon monoxide as the lethal agent. Sometimes a box filled with anesthetic gas is used to anesthetize small animals for surgery or euthanasia. 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
Sensation Lawn Mowers of snow blowers were developed under the name of Snow Blow. Phelps held patents on over 20 innovations in the lawn industry including the first for a rotary mower grass catcher U.S. patent number 2,855,744 in 1960. In 1966 Phelps sold the company to local real estate agent Frank Rogers who in turn sold it to a group of Chicago investors headed by Carl Johnson the plant was moved to 16th and Evans Streets in North Omaha, Nebraska. The "Sensation Mike Bike" was named after Frank Rogers son Mike. In November 1982 the Sensa after Frank Rogertion Lawn Mower Company