# SHANNON GROUP INC TONKA DIV

> EPA TRI Facility `50401SHNNN20011` · MASON CITY, IA · Closed

## Address
- 2001 15TH ST SW
- MASON CITY, IA 50401
- County: CERRO GORDO

## Mailing
- SHANNON GROUP INC TONKA DIV
- MASON CITY, IA 50401

## Source
- EPA TRI Form R: https://www.epa.gov/toxics-release-inventory-tri-program/find-facility-tri-reports
- Envirofacts: https://www.epa.gov/enviro/facts-services-where-information-find-it