What are the risks associated with the rescue operation at Silkyara tunnel and how long is it expected to take

• The collapse of the Silkyara tunnel poses several risks to the rescue operation.
• The instability of the tunnel structure can lead to further collapses or shifting of debris, endangering the lives of the rescue workers.
• The presence of toxic gases or lack of oxygen inside the tunnel can pose significant health risks to the rescuers.
• The limited access to the site and difficult working conditions, such as low visibility and cramped spaces, make the rescue operation challenging.
• The uncertainty of the tunnel's structural integrity may require careful planning and execution to ensure the safety of the rescue team.

Given these risks and challenges, the rescue operation at the Silkyara tunnel is expected to take a long time. The exact duration cannot be determined with certainty, as it depends on various factors, including the stability of the tunnel, the extent of the collapse, and the efficiency of the rescue efforts. The authorities involved, such as the National Disaster Management Authority (NDMA), are likely to prioritize the safety of the rescuers and proceed cautiously to minimize the risks associated with the operation.