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Care needs to be taken with portable gas appliances, like heaters. These are very popular in many workplaces, as they offer mobile heat and they are very effective. As these are a possible explosion risk, you need to make sure they are well maintained according to the manufacturer's recommendations and used correctly in accordance of your company's rules. Take special care where you put them, as they can easily start a fire. They have safety cut out just in case they get knocked over or the supply runs out.