Experts on Friday identified the material -- which led to a 'very powerful' radiation in an industrial area in Delhi -- as Cobalt-60, the exposure to which left five persons injured. Scientists from the Bhabha Atomic Research Centre and Narora Atomic Power Station also scanned Mayapuri industrial area on Friday morning to examine whether there was any other source of a similar emission in the vicinity. Panic was triggered in the locality on Thursday night after the news broke