 Complete the following phrase:  Rohatgi served as founding director of the Regional Research Laboratories CSIR at Trivandrum and Bhopal, and as a professor at the Indian Institute of Science and the Indian Institute of Technology, Kanpur, where he pioneered incorporating renewable materials such as coir fiber from the coconut shell, and baa and sisal plant fibers into polymer composites. He was running the research laboratory in Bhopal at the time of the 