Boris Abramovich Ratushny, Advisor to the President of the IAPD, President of the Federation of Tempering and Winter Swimming of St. Petersburg, continuing the topic of extracting information from open sources, told how, even before the revolution, scientist D.I. Mendeleev, not having the Internet, was able to determine the composition of the explosives used in the shells. He did this using data from the railway: how many trains arrive per month, from which cities, etc.
The speaker also noted that once she worked at the defense enterprise "Aurora", they had restrictions on writing letters. This condition existed because the enterprise was secret. So, like many other enterprises, employees of "Aurora" were sent to work at the vegetable base. At the entrance there was a huge shield on which all the defense enterprises of the Vyborg region were listed. Thus, using the data on this shield, it was possible to find out a complete list of secret organizations located in the area.
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