EPA Air · stack tests by state, industry and year

Transportation equipment manufacturing (NAICS 3361): stack tests in Mississippi, 2025

• 3Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Mississippi source whose primary industry code is NAICS 3361. A facility filing more than one industry code is counted under the first one on its record.

Transportation equipment manufacturing (NAICS 3361) in Mississippi, other years

• 2023 9
• 2021 3
• 2019 4
• 2017 4

Other industries in Mississippi, 2025

• Pipeline transportation (NAICS 4862) 103
• Paper manufacturing (NAICS 3221) 100
• Data processing and hosting (NAICS 5182) 62
• Utilities (NAICS 2211) 62
• Utilities (NAICS 2212) 55
• Chemical manufacturing (NAICS 3256) 36
• Chemical manufacturing (NAICS 3252) 34
• Petroleum and coal products manufacturing (NAICS 3241) 31
• Food manufacturing (NAICS 3111) 29
• Oil and gas extraction (NAICS 2111) 29
• Primary metal manufacturing (NAICS 3313) 24
• Wood product manufacturing (NAICS 3212) 21
• Chemical manufacturing (NAICS 3251) 20
• Chemical manufacturing (NAICS 3253) 14
• Wood product manufacturing (NAICS 3211) 13
• Wood product manufacturing (NAICS 3219) 12
• Fabricated metal product manufacturing (NAICS 3324) 12
• Nonmetallic mineral product manufacturing (NAICS 3279) 6
• Warehousing and storage (NAICS 4931) 6
• Miscellaneous manufacturing (NAICS 3399) 4
• Mining support (NAICS 2131) 3
• Waste management and remediation (NAICS 5622) 3
• Space research and technology (NAICS 9271) 3

Air-emissions stack tests recorded in Mississippi, 2025

Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.