SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Foundry chemical tests. Worker carrying out laboratory tests to determine the composition of steel samples. Steel is an alloy of iron and small amounts of carbon. One of the things that determines the strength and quality of a piece of steel is the proportion of carbon in it. This laboratory is part of the foundry for the repair area of the OAO KHK Yakutugol mechanical factory. Photographed in 2005, in Nerjungri, in the Republic of Sakha (Yakutia), Russia.
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