What is a recommended practice for handling explosives underground?

Using secured, labelled containers and maintaining distance is essential for handling explosives underground safely. This practice minimizes the risk of accidental detonation and protects personnel and materials from potential explosive hazards. By employing secured containers, the explosives can be kept in a controlled environment, which reduces the likelihood of unauthorized access or environmental factors triggering an explosion. Labelling containers ensures that everyone in the vicinity is aware of the contents and can take the necessary precautions. Maintaining distance is vital to ensure that any possible accidents do not harm individuals working in close proximity.

This approach aligns with safety regulations and best practices in the industry, emphasizing the importance of proper storage and handling protocols for highly volatile materials like explosives. Other options do not align with safety protocols and could lead to dangerous situations, making them inappropriate for safe practices in explosive handling.