Which of the following is crucial for handling hazardous materials?

Understanding Material Safety Data Sheets (MSDS) is crucial for handling hazardous materials because these documents provide essential information about the properties, hazards, handling, and safety precautions related to specific substances. MSDS are designed to inform workers about the potential risks associated with exposure, the proper protective measures to take, and instructions for safe handling, storage, and disposal. By being familiar with MSDS, personnel can effectively mitigate risks and ensure their safety and the safety of others when working with hazardous materials.

The other options do not capture this critical aspect of safety. Simply wearing gloves does not encompass the full range of protective measures necessary when dealing with hazardous materials; appropriate gloves are only one part of personal protective equipment (PPE). Using heavy machinery can increase risks associated with hazardous materials but does not directly relate to understanding how to safely handle those substances. Ignoring exposure limits is counterproductive, as it contradicts the principles of safety in handling hazardous materials and increases the chance of accidents or health issues. Therefore, understanding the information provided in Material Safety Data Sheets is essential for safe practices.