Which of the following categories is NOT listed as a health hazard?

Combustible dust is not categorized as a health hazard under OSHA's guidelines. Instead, it is considered a physical hazard due to its potential to cause explosions and fires when fine particles become airborne and encounter an ignition source. The primary health hazards recognized by OSHA include skin irritation, acute toxicity, and carcinogenicity, which directly relate to adverse health effects that can occur due to exposure to harmful substances. Skin irritation involves damage or inflammation to the skin, acute toxicity refers to substances that can cause harm or death with a single exposure, and carcinogenicity pertains to chemicals or agents that can lead to cancer. Understanding these distinctions is crucial for recognizing the various types of hazards present in the workplace.