Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
STILLWATER MINING CO EAST BOULDER MINE
517 W 1ST AVE, BIG TIMBER, MT, 59011
Parent company: NA
Carcinogen
PBT
— 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 | Nickel compounds | Methanol | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Copper compounds | Nickel And Nickel Compounds | Total (lbs) |
| 2024 | 209,279 | 54,906 | — | 37,012 | — | 373,576 |
| 2023 | 284,640 | 34,967 | — | — | — | 409,458 |
| 2022 | 152,500 | 51,660 | 47,955 | 30,540 | — | 285,545 |
| 2021 | 259,067 | 48,892 | — | 56,000 | — | 447,481 |
| 2020 | — | 81,108 | — | — | 220,061 | 416,755 |
| 2019 | — | 80,780 | — | — | 226,061 | 410,658 |
| 2018 | 161,119 | 95,426 | 55,482 | 29,046 | — | 345,518 |
| 2017 | 163,517 | 83,708 | 39,855 | 31,196 | — | 326,302 |
| 2016 | 165,576 | 87,728 | 42,359 | 32,419 | — | 332,254 |
| 2015 | 154,658 | 96,314 | 44,416 | 31,244 | — | 329,442 |
| 2014 | 120,361 | 60,974 | 34,635 | 28,948 | — | 248,864 |
| 2013 | 82,043 | 46,160 | 26,000 | 18,000 | — | 177,636 |
| 2012 | 75,591 | 44,361 | 22,140 | 19,280 | — | 164,419 |
| 2011 | 73,051 | 63,976 | 22,295 | 25,779 | — | 187,884 |
| 2010 | 68,348 | 42,925 | 17,496 | 23,260 | — | 154,263 |
| 2009 | 92,271 | 23,419 | 19,815 | 29,218 | — | 167,172 |
| 2008 | 116,554 | 3,604 | 34,401 | 36,778 | — | 205,933 |
| 2007 | 117,158 | 8,588 | 29,107 | 40,741 | — | 226,605 |
| 2006 | 119,100 | — | 34,000 | 42,840 | — | 208,869 |
| 2005 | 241,107 | 2,615 | 80,000 | 66,531 | — | 397,501 |
| 2004 | 94,704 | 3,520 | 67,003 | 16,251 | — | 187,751 |
| 2003 | 85,047 | — | 79,072 | 12,751 | — | 180,404 |
| 2002 | 65,220 | 19,028 | 74,743 | 23,292 | — | 186,839 |
| 2001 | 90,158 | 29,234 | 37,648 | 59,486 | — | 225,830 |
| 1998 | — | — | 28,181 | — | — | 28,181 |
▎ 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.