Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
BLACK BUTTE COAL CO
12 MILES SE OF POINT OF ROCKS, POINT OF ROCKS, WY, 82942
Parent company: LIGHTHOUSE RESOURCES INC
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 | Ethylene glycol | Lead | Mercury | Total (lbs) | ||
| 2022 | 100 | — | 0 | 100 | ||
| 2020 | 270 | 40 | 0 | 310 | ||
| 2019 | 120 | — | 0 | 120 | ||
| 2018 | 45 | — | 0 | 45 | ||
| 2017 | — | — | 0 | 0 | ||
| 2016 | 186 | — | 0 | 186 | ||
| 2015 | 270 | 40 | 0 | 310 | ||
| 2014 | 20 | 40 | 0 | 60 | ||
| 2013 | 1,343 | 40 | — | 1,383 | ||
| 2012 | 750 | 40 | — | 790 | ||
| 2011 | 1,800 | 40 | — | 1,840 | ||
| 2010 | — | 0 | — | 0 | ||
| 2009 | — | 10 | 0 | 10 | ||
| 2008 | — | 6 | 0 | 6 | ||
▎ 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.