Exhaust Gas Testing in Mines

The Federal Mine Safety and Health Act

The Federal Mine Safety and Health Act (Mine Act) requires that the U.S. Department of Labor's (DOL) Mine Safety and Health Administration (MSHA) inspect all mines each year to ensure safe and healthy work environments for miners. Section 75.1914(g) requires mine operators to develop and implement written standard operating procedures for weekly testing and evaluation of undiluted exhaust emissions from permissible and heavy-duty diesel-powered equipment in use underground.

Increased Nitrogen Dioxide (NO2) Emissions in Coal Mines

Some underground coal mine operators have experienced excessive Nitrogen Dioxide (NO2) emissions on several heavy-duty diesel powered locomotives and light-duty service machines while trying to meet the requirements for diesel particulates for the MSHA Health Hazard Alert. Symptoms of overexposure to NO2 include irritation to the eyes, nose and throat, cough, chronic bronchitis, breathing difficulty, chest pain, pulmonary edema, and rapid heartbeat.

Exhaust Gas Monitoring: 30 CFR § 70.1900

As required by 30 CFR § 70.1900 for Exhaust Gas Monitoring, both carbon monoxide and nitrogen dioxide are measured.

How Testo Can Help...

Testo has a complete line of products to assist in testing the exhaust gas of each diesel powered unit. The testo 340 four-gas analyzer is perfect identifying concentrations of O2, CO, NO, and N2SO. Your maintenance team can better evaluate the source of high concentrations. The testo 340 helps you understand the combustion characteristics of your engines so they can be tuned for higher performance and minimal pollutants. The testo 340 provides the following benefits...

Portable Emission Analysis

For compliance level documentation and reporting, the testo 350 portable emission analyzer with easyEmission software may be the right solution for you.

To learn more about the testo 340 four-gas analyzer
or the testo 350 portable emission analyzer for exhaust gas testing in mines,
email us at This email address is being protected from spambots. You need JavaScript enabled to view it. or call toll-free 800-227-0729.

testo 340 for engine testing

testo 340 for engine testing

testo 350 for engine compliance

testo 350 for engine compliance