A Stroll through the Forestry Maps and Plans – the History of Managing Croatian Forests Exhibition

KiG No. 26, Vol. 1 5, 201 6 88 melted in Rude, in a blast furnace with an annual capacity of 25,000 cents, one part ofwhich was transported to Slovenia. Annual production of iron ore was between 20,000 and 130,000 cents, while annual production ofiron was between 5,000 and 16,000 cents. The mine was closed in 1859 due to unprofitability. Twenty-six thousand tons ofore were extracted during the ten years ofoperation. Nearly all ore at the time was extracted in Vlašić-Kokel pits and only a small portion ofore was extracted from other locations such as the Classenbruch opencut where, before World War Two, hematite was extracted for the needs ofthe Sisak ironworks. After mine exploitation ceased, research was carried out on several occasions with the aim to restore the mining activity in the area. Research was carriedout beforeWorldWar I and between World War I and II, when numerous minor research projects were conducted both on the left and right banks ofthe Gradna brook. In addition to exploration of iron and copper ore deposits, exploration and extraction of gypsum were also carried out, but further extraction of gypsum was stopped, despite its considerable quantities, because the percentage of anhydrite was too high (about 15%). Gypsum was extracted at several sites in the mining part of Gradna, downstream Rude. Exploitation started at the beginning of the 20th century and went on, with occasional interruptions, until the early 1950s. After visiting St. Barbara Mine in Rude, we went to the Oštrc peak (752 m), where we took some photos and enjoyed views of the surrounding hills. We enjoyed our lunch in the mountain home Veliki Dol, where a kind lady served us a stew with gnocchi and cabbage salad, with apple strudel for dessert. We returned satisfied to Zagreb in the afternoon. The conference Program and Abstracts were printed and published (ISBN 978-953-95815-5-6). They are also available, along with many photos, at the Croatian Cartographic Society web site www.kartografija.hr.