Copper
Silica
Gypsum
Concrete
5
10
15
20
Reclamation is to expensive
Reshaping land
Water/air pollution
Toxic waste
New minerals are found everyday
Resource use is decreasing
Recycling will extend the supply forever
The supply is unlimited
110
130
150
170
Corrosion of minerals
Not enough people recycling
Not economically feasible
Some minerals get lost
Fertilizer production
Strengthening of concrete
Refining of gases
Catalytic converters
United States
Japan
Germany
None
Silica
Tungsten
Oil
Gold
Trade technology for resources
Trade oil for resources
Invest in a country it is trading with
Buy land in other countries to mine