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In the technology sector, a chunnel refers to the large air duct that expunges approximately 1,000,000 cubic feet of supercooled air per minute (more or less) onto the area in which you are trying to work. Usually found above cubes or in data centers above the KVM switches that attach to the monitors and keyboards, thusly making the affected technician shiver so much that he mis-types commands and destroys critical data.
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