Irkutsk region. Type of construction of the Angarsk hydroelectric power station. Installation of a concrete overpass. Welding of parts, concreting of an inter-unit bull. Cleaning rocky soil with pneumatic hammers. Loading of soil by an excavator into dump trucks for transportation to the dam. At the construction site of the dam, dump trucks are dumping the imported soil. One of the best drivers - N. M. Petrov.