On this video you see newest rail operator in Bulgaria - Euroingenering LTD. They start operating before about month ago - and pull freight trains with his diesel locomotives Ludmilla (second hand from Germany). Here 07 249 (ex 233 249) is pull empty freight train with platform wagons from Chervena Mogila factory (near Radomir) to Kalitinovo (home base of Euroingenering).
Train 10593 with 19 wagons and 380t is catched between Voluyak and Sofia stations.
Have a nice watch!