What are the most common causes of death in confined space entry?

The most common causes of death in confined space entry include asphyxiation due to oxygen deficiency or the presence of toxic gases, such as carbon monoxide or hydrogen sulfide. Other significant risks include engulfment by materials like grain or sand, and physical hazards like falling objects or equipment. Additionally, a lack of proper ventilation can exacerbate these hazards, leading to dangerous conditions. Effective training and safety protocols are essential to mitigate these risks.