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| TABLE 4 | ||||
| BYPRODUCT SULFURIC ACID PRODUCED IN THE UNITED STATES1 | ||||
| (Thousand metric tons, sulfur content and thousand dollars) | ||||
| Type of plant | 2014 | 2015 | ||
| Copper2 | 497 | r | 553 | |
| Zinc, lead, and molybdenum | 90 | r | 93 | |
| Total: | ||||
| Quantity | 587 | 646 | ||
| Value | 92,100 | 75,500 | ||
| rRevised. | ||||
| 1May include acid produced from imported raw materials. Data are rounded to no more than | ||||
| three significant digits; may not add to totals shown. | ||||
| 2Excludes acid made from pyrites concentrates. | ||||
Source: United States Geological Survey Mineral Resources Program
See also: Mineral commodity prices
