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| TABLE 4 | ||||||
| PHOSPHATE ROCK SOLD OR USED BY PRODUCERS | ||||||
| IN THE UNITED STATES, BY PERIOD1 | ||||||
| (Thousand metric tons and thousand dollars) | ||||||
| P2O5 | ||||||
| Period� | Rock | content | Value2 | |||
| 2005:r | ||||||
| January-June | 17,900 | 5,170 | 517,000 | |||
| July-December | 17,300 | 4,990 | 525,000 | |||
| Total | 35,200 | 10,200 | ####### | |||
| 2006: | ||||||
| January-June | 14,900 | 4,300 | 443,000 | |||
| July-December | 15,300 | 4,400 | 479,000 | |||
| Total | 30,200 | 8,710 | 922,000 | |||
| rRevised. | ||||||
| 1Data are rounded to no more than three significant digits; | ||||||
| may not add to totals shown.� | ||||||
| 2Free on board mine. | ||||||
Source: United States Geological Survey Mineral Resources Program