Archives

2017

Cover Page

Vol 32, No 2 (2017): No. 36

Snimljeno 18. listopada 2013., s Velikog Kozjaka, odnosno Premužićeve staze. Livada je Lubenovac, a u pozadini
su Hajdučki i Rožanski kukovi. Fotografi rala prof. emer. Josipa Velić.


The photo is taken on 18th October 2013, from location “Veliki Kozjak”, i.e. (mountain footpath) “Premužićeva
staza”. The meadow in the front is “Lubenovac”, and in the background are visible “Hajdučki i Rožanski kukovi”.
Photo by Prof. Emer. Josipa Velić.

Cover Page

Vol 32, No 1 (2017): No. 35

The Erzberg is the largest iron-ore surface mine in Central Europe and the world’s largest siderite deposit. Ore production output is currently at 2.1 million tons, resulting in overall entanglement of approximately 8.4 million tons, 6.3 million of which are dead rock. Approximately 1 million tons are moved from the extraction tier via the primary crusher, the secondary crusher, the sieving plant and then on to the ore deposit. The remaining material is enriched through processing in a heavy liquid and magnetic separation plant. Two state-of-the-art Atlas Copco Type ROC L8 down-the-hole hammers with 25 bars of pressure and a drilling capacity of up to 50 meters per hour do the boring. One blast creates approximately 40,000 to 60,000 tons of rock. The blast material is moved by 10 heavy- duty trucks (6 Komatsu HD 985-5 and 4 Komatsu HD 785-7 trucks) and 4 Komatsu WA-800-3 wheel loaders with 11 cubic meters of bucket capacity, and a Komatsu PC 1250 hydraulic excavator with 125 tons of service weight and a bucket capacity of 7 cubic meters. Komatsu HD-985-5 heavy-duty trucks are the largest trucks used in Central Europe. They provide 120 tons of payload. At a total vehicle weight of 200 tons they produce 1,064 hp. VA Erzberg GmbH and its subsidiary, Maschinen-Service Erzberg GmbH currently have about 220 employees. Ore mining, processing, shipping as well as general infrastructure and services keeps 170 employees busy, while non-ore-relat- ed activities (mining engineering, mechanical engineering, hunting, fishing, and general tourism) provide jobs for another 50 employees. Web source: http://www.abenteuer-erzberg.at/en/erzberg/open-cast-mining. Photo by Dr. Gordan Bedeković, Full Prof., during visiting open pit mine on 25th June 2016.


2016

Cover Page

Vol 31, No 1 (2016): No. 32

„Lunulitiformna kolonija mahovnjaka u srednjomiocenskim litotamnijskim vapnencima iz okolice Marije Bistrice (SZ Hrvatska). Mahovnjaci su, zajedno s koraljnim algama, bili glavni graditelji grebenskih struktura na europskim miocenskim karbonatnim platformama. Njihov procvat u Paratethysu tijekom donjega badena opisan je kao "briozojski događaj".Mikrofotografija snimljena na stereomikroskopu Olympus-SZX10, pomoću fotoaparata Canon EOS 11000. Snimila: dr. sc. Jasenka Sremac, izv. prof.“

 

„Lunulitiform bryozoan colony in Middle Miocene coralgal limestones from the vicinity of Marija Bistrica (NW Croatia). Bryozoans, together with coralline algae, are the major reef-builders in Miocene carbonate platforms of Europe. Their thriving in the Paratethys Sea during the Early Badenian is described as "bryozoan event". Microphotography taken on Olympus-SZX10, photographed by Canon EOS 11000 camera. Author: Dr. Jasenka Sremac, Assoc. Prof.“



1989

Cover Page

Archive vol. 1-29

Cover vol. 24