Table 1. Components of copper stock-in-use in the U.S. in 1999
Sector or subsector In-use stock, kg per capita
Infrastructure 95
Building and construction 76
    Plumbing 32
    Wiring 28
    Air conditioning and refrigeration 16
Industrial and Domestic Equipment 39
    Industrial 26
    Domestic 13
Transportation 28
    Motor vehicles 16
    Railway, ships, aircraft 12
Total 238