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| TABLE 3 | ||||||||||||
| SALES OF FERROUS SLAGS IN THE UNITED STATES , BY USE1 | ||||||||||||
| (Percentage of total tons sold) | ||||||||||||
| 2005 | 2006 | |||||||||||
| Blast furnace slag2 | Steel | Blast furnace slag2 | Steel | |||||||||
| Use | Air-cooled | Granulated | slag | Air-cooled | Granulated | slag | ||||||
| Ready-mixed concrete | 17.8 | -- | -- | 15.7 | -- | -- | ||||||
| Concrete products | 5.4 | -- | -- | 4.0 | -- | -- | ||||||
| Asphaltic concrete | 13.4 | -- | 15.6 | 13.3 | -- | 12.1 | ||||||
| Road bases and surfaces | 32.5 | -- | 53.0 | 41.3 | -- | 51.0 | ||||||
| Fill� | 12.3 | -- | 10.5 | 14.6 | -- | 17.9 | ||||||
| Cementitious material� | -- | 90.3 | -- | -- | 94.1 | -- | ||||||
| Clinker raw material | 4.9 | -- | 6.9 | 1.5 | -- | 6.9 | ||||||
| Miscellaneous3 | 9.6 | 0.9 | 2.3 | 7.6 | 0.6 | 0.8 | ||||||
| Other or unspecified | 4.2 | 8.8 | 11.7 | 2.0 | 5.3 | 11.3 | ||||||
| rRevised. -- Zero. | ||||||||||||
| 1A number of respondents provide breakouts that represent only the dominant use(s) of their slag; | ||||||||||||
| accordingly, the minor use categories are likely underreported. The data also incorporate some | ||||||||||||
| estimates and thus should be viewed as good to no more than 2-significant figures. | ||||||||||||
| 2Excludes expanded or pelletized slag; this material is generally sold as a lightweight aggregate. | ||||||||||||
| 3Reported as used for railroad ballast, roofing, mineral wool, or soil conditioner. | ||||||||||||
Source: United States Geological Survey Mineral Resources Program