'Balasore train tragedy has nothing to do with Kavach': Railway Minister Ashwini Vaishnaw rebuts Mamata Banerjee's claim

source https://timesofindia.indiatimes.com/india/balasore-train-tragedy-has-nothing-to-do-with-kavach-railway-minister-ashwini-vaishnaw-rebuts-mamata-banerjees-claim/articleshow/100740963.cms