The American Table of Distances is a resource for determining safe distances from inhabited spaces for a given charge.

• A. False
• B. Not used
• C. True
• D. Sometimes

Answer: (C)

The American Table of Distances provides minimum safe setbacks from inhabited spaces based on the charge weight per delay. It’s a safety reference blasters use to plan where people and structures must be located relative to a blast. By looking up the required distance for a given charge, you can ensure that inhabited spaces stay outside the danger zone. That’s why the statement is true. In practice, you determine the charge you’ll use, consult the ATD to find the minimum distance to keep from inhabited spaces, and design the blast to meet or exceed that distance. While some jurisdictions may incorporate additional rules or newer guidance, the ATD exists specifically to establish these safe distances and remains a standard tool.