Ecological Systems and Devices Annotation << Back Ecological and geochemical characteristic of overburden in «Karazhira» open-pit coal mine in East Kazakhstan oblast Evlampieva E.P., Panin M.S. There were investigated allocating peculiarities of chemical microelements and microelements in different grain-size of chemical threat in overburden of coal deposit “Karazhira” in East Kazakhstan oblast. There was established maximal and minimal concentration of elements in solids which were given an ecological and geochemical assessing. Key words: overburden; open-pit coal mine «Karazhira»; east kazakhstan oblast; extraction; toxicity class. Phone: (7222) 42-29-37