Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MARTIN MARIETTA MAGNESIA SPECIALTIES INC
160 SAMUEL B MILTON DR, RIVER ROUGE, MI, 48218
Parent company: MARTIN MARIETTA CORP
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 | Aluminum oxide (fibrous forms) | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Total (lbs) | |||
| 1993 | — | 2 | 2 | |||
| 1992 | — | 2 | 2 | |||
| 1991 | — | 8 | 8 | |||
| 1990 | — | 33 | 33 | |||
| 1989 | — | 39 | 39 | |||
| 1988 | 170 | — | 170 | |||
▎ 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.