Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ELECTRON CORP BLACKWELL
510 N 25TH ST, BLACKWELL, OK, 746312402
Parent company: ELECTRON CORP
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 | Methanol | Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification) | Manganese | 4,4'-Methylenedi(phenyl isocyanate) | Copper | Total (lbs) |
| 2000 | — | — | 1,013 | — | — | 2,044 |
| 1999 | — | — | 611 | — | — | 1,222 |
| 1998 | 15,507 | — | 1,127 | — | — | 16,634 |
| 1997 | — | — | 1,463 | — | — | 1,463 |
| 1996 | — | — | 1,000 | — | — | 1,000 |
| 1995 | — | — | 755 | — | — | 755 |
| 1994 | — | — | 255 | — | 255 | 510 |
| 1993 | — | — | 255 | 5 | 255 | 515 |
| 1992 | — | — | 250 | 250 | 250 | 1,000 |
| 1991 | 2,791 | — | 250 | — | 250 | 3,291 |
| 1990 | — | — | 250 | 1,965 | 250 | 2,465 |
| 1989 | — | 8,703 | 1,123 | 1,360 | 750 | 12,186 |
| 1988 | — | — | — | — | 795 | 1,838 |
| 1987 | — | — | — | — | — | 710 |
▎ 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.