Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
2598 HWY 61, FORT MADISON, IA, 52627
Parent company: FREEPORT-MCMORAN INC
Reported on-site TRI releases in pounds, grouped by reporting year.
The 10 chemicals with the highest cumulative on-site releases across all available years.
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| Year | Ammonia | Molybdenum trioxide | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Manganese compounds | Copper compounds | Total |
|---|---|---|---|---|---|---|
| 2024 | 2,618,250 | 32,000 | 6,605 | — | — | 2,656,871 |
| 2023 | 3,518,250 | 24,950 | 8,350 | — | — | 3,551,565 |
| 2022 | 3,018,250 | 20,955 | 8,450 | — | — | 3,047,666 |
| 2021 | 2,818,250 | 20,100 | 9,050 | — | — | 2,847,415 |
| 2020 | 2,618,250 | 16,500 | 8,750 | — | — | 2,643,511 |
| 2019 | 3,918,250 | 12,500 | 32,250 | — | — | 3,963,014 |
| 2018 | 3,518,250 | 18,200 | 35,250 | — | — | 3,571,718 |
| 2017 | 3,218,250 | 15,500 | 36,005 | — | — | 3,269,772 |
| 2016 | 3,324,250 | 20,100 | 34,250 | — | — | 3,378,637 |
| 2015 | 6,214,250 | 27,000 | 38,750 | — | — | 6,280,014 |
| 2014 | 4,370,250 | 39,950 | 38,250 | — | — | 4,448,491 |
| 2013 | 4,360,250 | 26,750 | 38,250 | — | — | 4,425,284 |
| 2012 | 4,380,250 | 23,350 | 37,250 | — | — | 4,440,879 |
| 2011 | 4,620,250 | 27,550 | — | — | 750 | 4,648,570 |
| 2010 | 3,870,005 | 21,350 | — | — | — | 3,891,377 |
| 2009 | 3,130,250 | 20,864 | — | — | — | 3,151,149 |
| 2008 | 3,310,341 | 25,323 | — | — | — | 3,335,679 |
| 2007 | 4,099,971 | 26,816 | — | — | — | 4,126,802 |
| 2006 | 3,975,320 | 30,646 | 9,400 | — | — | 4,015,517 |
| 2005 | 2,739,004 | 26,268 | 13,800 | — | — | 2,779,253 |
| 2004 | 2,401,295 | 26,400 | 13,900 | — | 78 | 2,441,698 |
| 2003 | 2,562,750 | 21,250 | 13,000 | — | — | 2,597,037 |
| 2002 | 2,009,250 | 21,600 | 19,000 | — | — | 2,049,900 |
| 2001 | 2,760,750 | 23,000 | 17,000 | — | — | 2,800,811 |
| 2000 | 2,380,250 | 19,750 | 20,000 | — | — | 2,420,000 |
| 1999 | 2,666,201 | 38,714 | 26,327 | — | — | 2,731,242 |
| 1998 | 3,117,553 | 120,674 | 19,000 | — | — | 3,257,227 |
| 1997 | 2,545,911 | 162,200 | 20,128 | — | — | 2,728,239 |
| 1996 | 3,905,429 | 134,134 | 15,800 | — | — | 4,055,363 |
| 1995 | 3,354,639 | 121,950 | 18,691 | — | — | 3,495,280 |
| 1994 | 2,449,024 | 114,943 | 21,145 | — | — | 2,585,112 |
| 1993 | 2,042,106 | 89,300 | 19,600 | — | — | 2,151,006 |
| 1992 | 1,794,078 | 13,700 | 19,000 | — | — | 1,826,778 |
| 1991 | 1,727,400 | 22,000 | 19,000 | — | — | 1,768,400 |
| 1990 | 2,250,400 | 25,800 | 18,770 | 190 | — | 2,295,160 |
| 1989 | 3,453,400 | 26,600 | 19,075 | 825 | — | 3,499,900 |
| 1988 | 2,319,431 | 25,200 | 22,000 | — | — | 2,366,894 |