Then became student in Legal in the town of Erlangen (Germany), but a few years later he graduated Handel Hochschule in Leipzig.
As an industrialist Koljo Karagiosov travelled to Germany many times and bought new machines for the factory.
In the camps in Nojarevo and Belene these men worked and lived like prisons tormented by the supervisors.
The Socialist party stained the reputation of all of them, announced them “enemy of the nation” and cruelly chased them.
He helped his father supplying the Zograph Monastery with provisions which he bought in Bulgaria and sent them in Mount Athos.