RMZ – Materials and Geoenvironment, Vol. 57, No. 1, pp. 75–96, 2010 75 Geological evaluation of brown coal reserves at the Hrastnik mine – RTH, Rudnik Trbovlje-Hrastnik Geološka evalvacija zalog rjavega premoga na območju jame Hrastnik - RTH, Rudnik Trbovlje-Hrastnik Željko vukelič1, *, Bojan klenovŠek2, ladiSlav Placer1, vladiMir Malenković3, evGen dervarič1 1University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva 12, SI-1000 Ljubljana, Slovenia 2RTH, Rudnik Trbovlje – Hrastnik, d. o. o., Trg revolucije 12, SI-1420 Trbovlje, Slovenia HTZ, I.P., d. o. o., Partizanska 78, 3320 Velenje, Slovenia *Corresponding author. E-mail:
[email protected] Received: June 3, 2009 Accepted: December 14, 2009 Abstract: As provided by the Act on the gradual closing down of the coal- mine Trbovlje-Hrastnik and on the development restructuring of the region, until the end of 2009 Rudnik Trbovlje-Hrastnik (RTH) will continue to supply coal to the thermal power plant Termoelektrarna Trbovlje (TET) in the planned annual volume of 0.6 million tonne. RTH continues to hold significant coal reserves of national impor- tance to Slovenia, which might we worth exploiting at some point in the future. The management of the coalmine has made every effort to ensure continued coalmining at RTH after 2009 at the existing mines Ojstro and Trbovlje (Field III and Field Plesko), at the already closed down mine Hrastnik. This paper provides an overview of the results of the study “The Legitimacy of the Extraction of Remain- ing Coal Deposits at the Mines Ojstro and Trbovlje After 2009” – Stages 2 and 3, with the emphasis on the evaluation of coal deposits at the mine Hrastnik.