in the morning, geotechnical engineer momo bandaa is ready to go to work, he works at the lefa gold minenks to my work i was able to build a house, educate my children, and develop myself professionally. the russian company north gold has been operating in guinea since 2008. in december they plan to launch underground gold mining, this will allow mining. at about two times more precious metal from one ton of ore. the lefa gold mine is considered one of the largest in guinea. the gold reserves here will last for another 11 years of mining, possibly more, since geological exploration work is carried out constantly. this equipment allows you to monitor how rocks move and warn of a possible collapse. all information is transferred to the computer. we go to the office for accurate data. you see, the yellow zone is a potentially dangerous area, gold mining at the mine takes place in an open way, there are several quarries, the ore is blasted, and then loaded onto special vehicles, only the height of their wheels is about 3 m. each such vehicle holds about 100 tons, one ton contains approximate