NRI billionaire business magnates in London have committed more than Rs 500 crore of investment to the rejuvenation of the polluted Ganga, as the Director General of the National Mission for Clean Ganga U P Singh said. Union minister Nitin Gadkari, whose responsibilities include water resources, said that in addition to Ravi Mehrotra and Anil Agarwal`s commitments to the sacred river, the London-based Hinduja brothers have agreed to maintain the Haridwar stretch and Prakash Lohia, chairman of Indorama Corporation, has committed to the Kolkata section. Lohia is from Kolkata. In India, Shiv Nadar, chairman of HCL, has taken up the Varanasi part. Gadkari, who is on a trip to London, said that whilst the government had sanctioned Rs 20,000 crore towards the clean Ganges programme, the corporates would pay for their stretches themselves as "total charity cause" and he appealed to "all Indian companies and NRIs across the world" to participate. The costs vary between Rs100 and Rs200 crore per project.