A third would be the personal computer ( just think of all those typing pools fired and adding machines no longer needed . ) A source for further reading would be Luddite . talk ) 02 : 20, 16 August 2008 ( UTC)
2.
For example, some condensed aerosol fire suppressants can extinguish a Class B flammable liquid pool fire with 1 / 5 the amount of Halon 1301 agent or 1 / 10 the amount of a hydrofluorocarbon or fluoroketone based clean agent gaseous fire suppression system in terms of kilogram mass of agent per cubic meter.
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