|
| TABLE 4 | ||||
| BYPRODUCT SULFURIC ACID PRODUCED IN THE UNITED STATES1, 2 | ||||
| (Thousand metric tons of sulfur content and thousand dollars) | ||||
| Type of plant | 2005 | 2006 | ||
| Copper3 | 575 | 576 | ||
| Zinc, lead, and molybdenum4 | 137 | 98 | ||
| Total: | ||||
| Quantity | 711 | 674 | ||
| Value | 80,200 | 64,700 | ||
| 1May include acid produced from imported raw materials. | ||||
| 2Data are rounded to no more than three significant digits, may not add to totals shown. | ||||
| 3Excludes acid made from pyrites concentrates. | ||||
| 4Excludes acid made from native sulfur. | ||||
Source: United States Geological Survey Mineral Resources Program