Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KENNAMETAL INC DBA KENNAMETAL FIRTH STERLING
7300 HWY 20 W, HUNTSVILLE, AL, 35806
Parent company: KENNAMETAL INC
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Ammonia | Hydrogen sulfide | Cobalt | Cobalt compounds | Molybdenum trioxide | Total (lbs) |
| 2024 | 1,295,510 | 1,454 | — | — | — | 1,298,054 |
| 2023 | 1,130,190 | 2,666 | — | 230 | — | 1,133,213 |
| 2022 | 1,252,510 | 1,475 | — | — | — | 1,254,356 |
| 2021 | 1,470,490 | — | — | — | — | 1,470,659 |
| 2020 | 1,290,210 | — | — | — | — | 1,290,474 |
| 2019 | 1,340,060 | — | — | — | — | 1,340,385 |
| 2018 | 990,390 | 2,020 | — | — | — | 993,425 |
| 2017 | 697,870 | 1,758 | — | 1,808 | — | 701,437 |
| 2016 | 665,390 | 1,778 | — | 1,147 | — | 668,458 |
| 2015 | 382,330 | — | — | 1,999 | — | 384,557 |
| 2014 | 500,370 | 2,020 | — | 1,307 | — | 503,828 |
| 2013 | 446,440 | — | — | 2,301 | — | 448,971 |
| 2012 | 402,550 | 1,162 | 3,802 | — | — | 407,894 |
| 2011 | 315,418 | — | 7,202 | — | — | 323,335 |
| 2010 | 328,354 | — | 81 | — | — | 328,443 |
| 2009 | 241,481 | — | 1,156 | — | — | 242,642 |
| 2008 | 586,518 | — | — | — | — | 586,523 |
| 2007 | 539,644 | — | — | — | — | 539,649 |
| 2006 | 188,385 | — | — | — | — | 188,390 |
| 2005 | 134,593 | — | — | — | — | 134,598 |
| 2004 | 158,282 | — | — | — | — | 158,287 |
| 2003 | 86,505 | — | — | — | — | 86,510 |
| 2002 | 18,771 | — | — | — | — | 18,776 |
| 2001 | 4,990 | — | — | — | — | 4,995 |
| 2000 | 7,742 | — | — | — | — | 7,992 |
| 1999 | 53,284 | — | — | — | 1,570 | 55,104 |
| 1998 | 40,750 | — | — | — | 1,000 | 41,755 |
| 1997 | 34,000 | — | — | — | — | 34,005 |
| 1996 | 34,000 | — | — | — | — | 34,005 |
| 1995 | 47,000 | — | — | — | — | 47,000 |
| 1994 | 53,000 | — | — | — | — | 53,000 |
| 1993 | 28,000 | — | — | — | — | 28,000 |
| 1992 | 40,000 | — | 250 | — | 537 | 41,037 |
| 1991 | 36,000 | — | — | — | 250 | 36,500 |
| 1990 | 162,000 | — | 250 | — | 250 | 162,750 |
| 1989 | 23,126 | — | — | — | 250 | 23,376 |
| 1988 | 372,849 | — | — | — | 250 | 373,099 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.