His interest for technology and great success in studying it "with a pronounced tendency towards mining" were more than enough to qualify for a "state scholarship" to be sent to study mining at the Mining Academy in Freiberg. For the winter semester in 1867/68 he moved to the Zurich Polytechnic, where he studied "mechanical engineering" intensively. The following year he returned to Freiburg, where he completed his study of geology. In 1869, upon approval of the Ministry of Education of Serbia, Klerić went to Berlin's Mining Academy, where he studied specialized courses in mining for another year. After that, he spent time on practical work and observation of German mines in Westphalia, Saxony and Upper Silesia, as well as the mine Pribram (in the modern day Czech Republic).
