During a trenching operation for a utility line, the loader operator encounters a section of very soft, wet clay. The trench walls are caving in. Which immediate action should the operator take to ensure safety and continue the work effectively?

Question: During a trenching operation for a utility line, the loader operator encounters a section of very soft, wet clay. The trench walls are caving in. Which immediate action should the operator take to ensure safety and continue the work effectively?

Answer options:

• Continue digging rapidly to minimize exposure time to the unstable conditions. ✅ Install trench boxes or shoring before proceeding with excavation in that section.
• Increase the bucket's angle of attack to remove more material at once.
• Use the loader's boom to push back the collapsing trench walls.

Correct answer: Install trench boxes or shoring before proceeding with excavation in that section.

Explanation: In soft, wet clay where trench walls are caving, installing trench boxes or shoring is the safest and most effective immediate action to prevent collapse and protect workers. Continuing to dig rapidly, increasing the bucket angle, or pushing back walls with the boom does not address the underlying stability issue and creates significant hazards.