Sarytogan Graphite has put its foot on 282 square kilometres of Kazakhstan ground to secure a copper-porphyry deposit on the 30km-diameter Baynazar Caldera. Sarytogan Graphite has put its foot on 282 square kilometres of Kazakhstan ground to secure a copper-porphyry deposit on the 30km-diameter Baynazar Caldera. Business / Companies Sydney Morning Herald – Latest News