What is a primary concern when handling explosives?

The primary concern when handling explosives is safety and security. Explosives are highly sensitive materials that can pose significant risks if not managed properly. This involves ensuring that they are stored correctly, transported safely, and handled by trained personnel to prevent accidents, unauthorized access, and potential harm to people and property.

Safety measures include using personal protective equipment, following proper procedures for loading and unloading, and being aware of the appropriate distances and containment methods in case of an incident. Security is equally critical, as explosives must be safeguarded against theft or misuse, which could lead to catastrophic outcomes.

The other options, although relevant in their own contexts, do not reflect the immediate and critical concerns when dealing with explosives. Markings and colors play a role in identification, but they are secondary to the overarching need for safety. Environmental impact is important but typically considered after safety and security protocols are firmly established. While cost-effectiveness is a factor in operational decision-making, it should not compromise the safety and security measures in place for explosive handling.