It has been described as "the richest concentration of iron ore on the face of the earth."
At the time of its discovery it promised to outdo the great Hull-Rust-Mahoning mine in Hibbing, Minnesota, USA.
Cerro Bolivar has been mined since the 1950s, originally by U.S. Steel.
In 1975, the mining operation was nationalized by the government of president Carlos Andrés Pérez.
Mining stopped in 1997, but resumed again in 2009 when the Swiss company Commodities and Minerals Ltd took over operations on invitation by president Hugo Chávez.