Fire extinguisher useful in fighting fires with a particular group of fuel. Specifications for fire extinguishers are set out in the standard AS/NZS 1841, the most recent version being released in 2007. All fire extinguishers must be painted signal red. Except for water extinguishers, each extinguisher has a coloured band near the top, covering at least 10% of the extinguisher's body length, specifying its contents. In Australia, yellow (Halon) fire extinguishers are illegal to own or use on a fire, unless an essential use exemption has been granted, this is due to the ozone-depleting nature of halon. According to the standard BS
CO2 is Green CO2 is Green CO2 is Green is a non-profit organization supporting public policy on environmental issues. A main focus of the organization are federal proposals that may “interfere with natures dependence on carbon dioxide.” CO2 is Green does not view carbon dioxide as a pollutant and advocates for federal law and regulations to support this thinking. The CO2 is Green campaign was produced by H. Leighton Steward and Corbin Robertson. Steward retired in 2000, and was the vice chairman of Burlington Resources, a Houston-based oil and gas company bought by ConocoPhillips in 2006. Robertson, the CEO of Natural Resource Partners,