Decision-making for dust suppressant selection in mining roads: a comparative study using FAHP and PROMETHEE II

Effective dust suppression on mining haul roads is essential for reducing health risks, ensuring operational safety, and addressing environmental concerns. This study presents a decision-making framework combining the Fuzzy Analytic Hierarchy Process (FAHP) and PROMETHEE II to evaluate eight dust suppressant alternatives used in Chilean mining. The alternatives were assessed under economic, environmental, health, and technical criteria based on expert judgement. Results highlighted Bischofite, Asphalt Emulsion, and Vegetable Oils and Molasses as preferred options for the studied mines. The results demonstrate how locally relevant alternatives can be prioritised using a structured decision-making framework rather than identifying universally optimal dust suppressants.