Question

The most effective method for controlling dust in haul roads of opencast mines is

• A. Increasing vehicle speed
• B. Chemical stabilization or water spraying
• C. Increasing tyre pressure
• D. Reducing road width

Hint:

The most common dust suppression method in opencast mines is \[ \boxed{ \text{Regular water spraying or chemical dust suppressants.} } \]

Answer 1

The Correct Option is B

Step 1: Recall the major source of dust. Dust on haul roads is mainly generated by vehicle movement over loose road surfaces.

Step 2: Identify the most effective control measure. Applying water or chemical dust suppressants binds the dust particles and prevents them from becoming airborne. Hence, \[ \boxed{\text{Chemical stabilization or water spraying}} \] is the correct answer. Therefore, \[ \boxed{(B)} \] is the correct answer.