Dehradun, Aug. 14 -- At least six workers were killed and 14 injured after a landslide and heavy water seepage triggered a partial collapse of an under-construction Tehri Hydro Development Corporation (THDC) tunnel at Mayapur near Pipalkoti in Uttarakhand's Chamoli district on Thursday evening, officials said. Two workers remained trapped and rescue operations were underway till the time of going to print, they added. P8...