What is required for locomotives and self-propelled personnel carriers in mining operations?

In mining operations, it is mandated that locomotives and self-propelled personnel carriers be equipped with specific fire safety equipment to ensure the safety of personnel and equipment. The requirement for one portable fire extinguisher is crucial because it provides an immediate means to address any fire incident that may arise in these vehicles.

Having a portable fire extinguisher readily available allows personnel to act quickly in case of fire, potentially preventing small fires from escalating into larger, uncontrolled blazes that could lead to severe injury or fatality. This requirement aligns with safety standards and regulations designed to protect workers in hazardous environments, such as mines, where fires can pose significant risks due to the presence of flammable materials and confined spaces.

The other options, while related to fire safety, do not meet the specific requirement set forth for locomotives and personnel carriers in this context. For instance, two extinguishers might seem beneficial but are not a requirement, and fire blankets as well as smoke detectors serve different, non-specified roles in the scope of this question. The focus on one portable fire extinguisher is clear and aligns with safety regulations aimed at mitigating fire hazards in the mining industry.