What is the role of blasting mats and barriers during blasting?

• A. Improve loudness of blast.
• B. Serve as decorative elements.
• C. Provide a source of ignition.
• D. Contain debris, reduce fly rock, and help manage ground and surface hazards during blasting.

Answer: (D)

Blasting mats and barriers are used to control safety hazards during blasting. They are designed to contain debris and reduce fly rock so fragments stay within controlled areas and do not endanger workers, nearby structures, or the environment. Blasting mats, heavy sheets placed over the blast area, absorb and distribute the blast energy and help keep debris from being projected outward. Barriers such as berms, fencing, or screens create a controlled boundary that further prevents rocks and dust from reaching adjacent ground or surface facilities. Together, these tools help manage ground movement, surface disturbances, and other hazards associated with blasting. They do not affect loudness, are not decorative, and are not ignition sources.