Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NATIONAL LOCK CORP
104 KEYSTONE DR, SIKESTON, MO, 63801
Parent company: AMERICAN BUILDERS HARDWARE 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 | Xylene (mixed isomers) | Trichloroethylene | Selenium | Total (lbs) | ||
| 1989 | 3,540 | 6,780 | 250 | 10,570 | ||
| 1988 | 3,960 | — | — | 3,960 | ||
| 1987 | — | — | 250 | 250 | ||
▎ 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.