BANJA LUKA (Bosnia and Herzegovina), July 30 (SeeNews) â Bosnian oil refinery Rafinerija Nafte Brod [BANJ:RNAF-R-A] said on Tuesday its net loss soared to 55.8 million marka ($31.8 million/28.5 million euro) in the first half of 2019, from 6.1 million marka a year earlier.