![](https://app-johanies-cz.s3.amazonaws.com/production/image/2016/06/06/00/20/00/97451b8b-ab2f-4318-a548-55b6a038286a/Martinek_noviny.jpg)
Article in Moscow newspaper – Jaroslav Martínek
Fragment from the soviet daily Izvestija
Newspaper fragment
Fragment from the soviet daily Krasnoyarsky rabochiy
Description of unloading and loading of coal, fragment from specialist technical literature.