List 3 types of environmental tests which must be regularly conducted?

• A. Visual inspections of seals
• B. Respirable dust, Noise levels, Undiluted exhaust emissions
• C. Water quality in mine water
• D. Temperature, Humidity, Light levels

Answer: (B)

Regular environmental monitoring in coal mining focuses on airborne contaminants and noise to protect workers. Measuring respirable dust tracks the fine particles that can lodge in the lungs, helping ensure exposure stays within limits. Monitoring noise levels helps prevent noise-induced hearing loss by keeping sound exposure within regulatory thresholds. Checking undiluted exhaust emissions from on-site diesel equipment assesses pollutants emitted before dilution, addressing workplace air quality and regulatory limits. Other options, like visual inspections of seals, water quality in mine water, or basic environmental comfort factors such as temperature, humidity, and light, are important for safety or operations but are not the standard trio of environmental tests required on a regular basis for health and safety oversight. Therefore, the three tests to regularly conduct are respirable dust, noise levels, and undiluted exhaust emissions.