Period 6 element point of −38.83 °C and boiling point of 356.73 °C, mercury has one of the narrowest ranges of its liquid state of any metal. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is mostly obtained by reduction from cinnabar. Cinnabar is highly toxic by ingestion or inhalation of the dust. Mercury poisoning can also result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury), inhalation of mercury vapor, or eating seafood contaminated with mercury. Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, and other
Ship disposal examples of where environmental concerns have complicated the planned disposal of ships have been the Norwegian Cruise Lines vessels SS "Norway" and SS "Oceanic", as well as the French aircraft carrier "Clemenceau". Although in the past there were few effective controls on ship disposal, and the risk of being caught was therefore limited, national authorities as well as environmental organisations are now more vigilant. Ships are sometimes tracked when they are nearing the end of their lifespan. Companies caught disposing of ships illegally face hefty fines. Ship disposal A number of different methods exist for disposing of a ship after