What action should be taken before loading fine coal dust from haulageways?

Applying water or a dust allaying material before loading fine coal dust from haulageways is the correct course of action because it significantly reduces the risk of dust clouds that can create hazardous conditions. Fine coal dust can be explosive when suspended in the air and poses serious health risks to workers due to inhalation. By wetting the dust, you help to bind the particles together, preventing them from becoming airborne during the loading process.

Using dust allaying materials can further enhance this effect, creating a safer environment for operators and workers in the vicinity. This action is essential for maintaining safe operational practices in underground mining and helps comply with regulations concerning airborne particulates and worker safety.

Other options, such as leaving the dust as is, increasing ventilation, or using fans to disperse the dust, will not adequately mitigate the risks associated with fine coal dust. Leaving the dust untreated poses the highest risk, while increasing ventilation may not sufficiently control dust presence, and using fans to disperse the dust could potentially worsen the situation by creating airborne hazards.