What body approves the classification of permissible equipment and explosives?

The classification of permissible equipment and explosives is primarily overseen by the USBM, which stands for the United States Bureau of Mines. The USBM is tasked with the research and development related to mining safety and practices, and a critical part of their role included testing and approving equipment that can be operated safely in hazardous mine environments, particularly concerning flammable or explosive conditions.

This classification is vital for ensuring that equipment used in underground mines minimizes the risk of accidents and fatalities related to explosions. The rigorous testing and classification by the USBM provided the mining industry with trusted standards for machinery and explosives, helping to enhance safety and regulatory compliance within mining operations.

While the Mine Safety and Health Administration (MSHA) plays a significant role in enforcing mining regulations and promoting safe practices, the direct responsibility for the approval and classification of permissible equipment falls under the jurisdiction of the USBM. Other entities, like the Environmental Protection Agency and the Department of Labor, have distinct roles that do not pertain specifically to the classification of mining explosives or equipment.