UTTARKASHI: Prime Minister Narendra Modi on Monday spoke with Uttarakhand Chief Minister Pushkar Singh Dhami to take stock of the rescue operation to save 41 workers trapped in the Silkyara tunnel and stressed on the need to keep their morale up. An international tunnelling expert, Arnold Dix, arrived at the disaster site to review the rescue efforts, now in its ninth day. Dix heads the Geneva-based International Tunnelling and Underground Space Association. Dix expressed hope that the trapped workers will be evacuated safely. He also expressed satisfaction at the rescue efforts done so far, saying “enormous amount of work” has been done. Necessary rescue equipment and resources are being provided by the Centre, and through mutual coordination between central and state agencies, the trapped workers will be safely evacuated, PM Modi said, according to a statement issued by the Uttarakhand Chief Minister’s Office.