All 41 workers trapped in Uttarakhand’s Silkyara tunnel since November 12 have been rescued, thanks to the efforts of international tunnel expert Arnold Dix and a team of experts in rat-hole mining. Arnold Dix, president of the International Tunnelling and Underground Space Association, specializes in underground infrastructure and safety. He arrived at the site on November 20, played a crucial role in the rescue operation, and assured the workers’ safe return before Christmas.