Trace Metals. Metals, including nickel, iron, and vanadium are often found in crude oils in small quantities and are removed during the refining process. Burning heavy fuel oils in refinery furnaces and boilers can leave deposits of vanadium oxide and nickel oxide in furnace boxes, ducts, and tubes.
Chandra, meet Sultan â Chandra Bahadur Dangi, at 21Â½ inches the shortest adult ever verified by Guinness World Records, poses Thursday in London with the world's tallest man, Sultan Kosen, who stands 8 feet 3 inches tall. Chandra, meet Sultan â Dangi, 74, is a weaver in a remote village of Nepal. He weighs just 32 pounds.
The countries with the shortest average height are Indonesia, Cambodia, the Phillipines, and Bolivia. Different sources have different information. Gender also matters. Wikipedia places the shortest average females to be Bolivian, at 1.422 m (4 ft 8 in), but the shortest men to be Indonesian, at 1.580 m (5 ft 2 in).