During windrow mixing, a common challenge is material segregation. What adjustment to grader operation helps mitigate this problem?

Question: During windrow mixing, a common challenge is material segregation. What adjustment to grader operation helps mitigate this problem?

Answer options: ✅ Increasing blade pitch and reducing travel speed to thoroughly turn over material.

• Decreasing blade pitch and increasing travel speed to spread material quickly.
• Operating with the mouldboard at a 90-degree angle to the direction of travel.
• Using only the very tip of the blade to mix the material.

Correct answer: Increasing blade pitch and reducing travel speed to thoroughly turn over material.

Explanation: To combat material segregation during windrow mixing, increasing the blade pitch (angling the top of the mouldboard forward) and reducing travel speed allows the material to be thoroughly turned over and blended. This helps to redistribute larger and smaller aggregates, achieving a more uniform mix as per CCOHS guidance on material handling.