16th april, 2011 to 20th september 2012. 5300 tpd cement plant. calcom cement india limited : worked as a deputy manager (mechanical) for lanka, nagaon, assam. 29th august, 2009 to april, 2011. 3400 tpd cement plant. purbanchal cement limited : worked as an sr. engineer (mechanical) for kamrup (assam)5th feb, 2007 to 25th august, 2009.