Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MASON & HANGER MS ARMY, AMMUNITION PLANT
BUILDING 9110, N S T L, MS, 395297099
Parent company: MASON & HANGER - SILAS MASON CO 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 | Freon 113 (CFC-113) | Acetone | Trichloroethylene | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ethylene glycol | Total (lbs) |
| 1993 | — | — | — | — | — | 500 |
| 1992 | — | — | — | — | — | 500 |
| 1991 | — | — | — | — | — | 250 |
| 1990 | 151,000 | 40,000 | 1,555 | — | — | 194,718 |
| 1989 | 408,400 | 30,649 | 30,750 | — | — | 489,379 |
| 1988 | 462,000 | — | 8,300 | — | 250 | 478,050 |
| 1987 | — | — | — | 18,310 | 16,739 | 35,105 |
▎ 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.