A resident of Vladivostok, which is sandwiched between China, North Korea, and the Sea of Japan, was adding ordinary coal to a fire when he noticed a shiny metal object peeking through a piece of the friable black rock.1 The portion that protruded looked suspiciously manmade, so he investigated by enlisting the help of nearby scientists.
The Vladivostok resident, Dmitry, found embedded in his coal a shiny metal bar with teeth, like those of a bar or plate gear built to mesh with the teeth of a wheeled gear.
The Pennsylvanian coal came from the Chernogorodskiy mines from the Khakasis region north of Mongolia.2 According to international Russian news source Komsomolskaya Pravda, biologist Valery Brier helped analyze the odd-shaped object. X-ray diffraction revealed that it was mostly aluminum with about two to four percent magnesium. This unique alloy is not generally produced today. And Brier noted that refined aluminum implies high technology.3