A strip coal mine "Bogatyr" had been built by 1969 in Ekibastuz, Kazakhstan. In 1985 it reached its highest annual production level - 56.8 million tons of coal. The strip mine of such a high production capacity has been built for the first time in the world and, because of this factor, in 1985 it was put into the Guinness Book of World Records.
A bucket wheel excavator which makes 4500 tons per hour.
The height of the excavator is 45 m.