Final answer:
WHMIS communicates information about hazardous materials to workers through symbols and labels. These include the NFPA 704 Hazard Diamond, which provides a summary of health, flammability, and reactivity hazards.
Step-by-step explanation:
WHMIS provides information to workers about hazardous materials mainly through symbols and labels. Hazardous materials information is vital for ensuring safety in the workplace, particularly where chemicals are used or stored. Labels may include a variety of warnings, such as designations for flammable materials, toxic substances, corrosive agents, and more. For example, the National Fire Protection Agency (NFPA) 704 Hazard Identification System uses a diamond-shaped symbol that summarizes the health, flammability, reactivity, and special hazards associated with a chemical. Information on each chemical must be succinctly communicated to the employees primarily through visual means such as pictograms, hazard diamonds, and warning labels. Employees are also trained to handle these hazardous substances safely, which includes know-how on disposal, emergency procedures, and the use of personal protective equipment.