|World Reserves and Cumulative Production of Selected Minerals: 1950-1980 |
(millions of metric tons of metal content)
|Mineral||1950 Reserves||Production 1950-1980||1980 Reserves|
|SOURCE: Repetto, p. 23.|
So that's what "known reserves" means, huh? That we have no clue how much aluminum, copper, iron and lead really exists? I wonder about oil?