What hazard is associated with Carbon Monoxide (CO) in this material?

• A. Poison
• B. Fire, Diesel, Explosives
• C. Seam, Goaf, Outburst
• D. Non Poison - Displace Oxygen

Answer: (A)

Carbon monoxide is a toxic gas that causes poisoning. It binds to hemoglobin in the blood far more readily than oxygen, forming carboxyhemoglobin, which prevents oxygen from being carried to tissues. Even relatively low levels can impair respiration and brain function, leading to headaches, dizziness, confusion, and, with higher exposure, unconsciousness or death. In mines, CO can come from diesel engines or incomplete combustion and can build up in enclosed spaces, making it a serious poisoning hazard. While CO can contribute to asphyxiation by reducing usable oxygen, its primary risk is toxicity, so it’s classified as a poison. The other options describe different kinds of hazards that aren’t the main concern with CO.