Благодарность http://ria.ru/. (согласно п.2 Правил МИА «Россия сегодня» РИА) Modern military engineers to effective use the armed excavators and All-Terrain vehicles as it has been shown in Nizhny Tagil. So russian soldiers can restore damaged railway bridge in 30 Minutes, also how their ancestors could to build the World's longest Trans-Siberian railway in 1891.