Can’t sit back, says 99-year-old Two Salt Lake residents, a 99-year-old engineer and an 82-year-old homemaker, on Tuesday donated Rs 90,000 and Rs 1 lakh to the Chief Minister’s Relief Fund. Mihir Chatterjee, who had retired from the Public Works Department in 1979, donated a month’s pension while Manjusha Das Ghosh donated the money from…