Along with excessive heat and explosive or toxic gasses, what other harmful atmospheric condition must be removed?

In environments where excessive heat and harmful gases are present, stale air is a critical atmospheric condition that must be addressed. Stale air refers to air that has been trapped or poorly circulated, often leading to reduced oxygen levels and the accumulation of carbon dioxide and other contaminants. This condition can exacerbate the dangers posed by heat and toxic or explosive gases, making it vital to ensure proper ventilation and circulation to maintain a safe working environment.

By removing stale air, you promote better air quality, increase oxygen availability, and mitigate the risks associated with harmful gases. The other atmospheric conditions, while potentially harmful in certain situations, do not directly relate to the necessity of airflow and oxygen replenishment in this context. This makes stale air an essential factor to consider in maintaining safety in environments with excessive heat or toxic substances.