MINING AT GACKO OPENCAST MINE, BOSNIAHERZEGOVINA A QUESTION OF ECONOMICS ... Mining the lignite has proved diﬃ cult in terms of equipment performance and in maintaining quality consistency in ... surrounded by Cretaceous limestone upland. Opencast lignite mining ﬁ rst started at Gacko in 1954, and has continued since that time.
· Opencast mining or quarrying of minerals is easier than mining by underground methods. During quarrying the and rocks below which the minerals lie, are removed and in the initial stages, in a place which is not required in future g, residential or other purposes. The mineral exposed is completely extracted, Opencast mining is also known as openput mining, opencut mining, surface mining .