"Flushing is possible and banknotes," he wrote in his time Mendeleyev, referring to the irrational use of oil as fuel. The search for alternative energy sources has become one of the main problems of economic development States. Using waste can significantly save energy and natural resources, reduce pollution and create a large number of additional […]

The History of the Cement started producing in the last century. In the early 20-ies of the xix century. E. Deliev got kilns binder of a mixture of lime and clay, and published their findings in a book published in Moscow in 1825 In 1856 he was launched Russia's first plant of portland cement. Cement […]