BANJA LUKA (Bosnia and Herzegovina), July 31 (SeeNews) – Bosnian coal miner and power producer RiTE Ugljevik [BANJ:RTEU-R-A] said on Wednesday its net loss widened to 21.8 million marka ($14.8 million/11.1 million euro) in the first half of 2013 from 7.0 million marka a year earlier.