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…showed last 75 words of 413 total…Containers of mercury should be securely covered and spillage should be avoided. Mercury should only be handled under a well-ventilated area. Mercury is well known because of its use in many thermometers. It was common to demonstrate the formation of mercury in the laboratory by heating mercury sulfide. This method forms the basis of commercial extraction to get mercury. The prepared cinnabar ore is heated in a current of air and the mercury vapor condensed.