What is tunneling? Mention the hazards and risks involved in tunneling work.

Tunneling involves excavating an underground passageway or structure through various materials, such as soil, rock, or other geological formations. This process is crucial for constructing transportation routes (e.g., subways, roads), underground utilities, water supply systems, and other infrastructure projects. However, tunneling poses several hazards and risks to workers, equipment, and the surrounding environment. Here are the hazards and risks associated with tunneling work:

1. Cave-ins and Structural Failure:
   • Unstable ground conditions can lead to tunnel collapses, resulting in injury or fatality to workers and damage to equipment.
2. Falling Objects:
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