PPT and Bhushan Steel among offenders
Opposition alleges Rs 4 lakh cr irregularity in award of contracts
Higher prices, lower availability among the reasons
It's for the first time now that the promoters are selling their stake in the company since its initial public offering in 2008
The transaction proceeds to help real estate company lower its Rs 21,000-cr debt
Domestic traffic fell 7.8 per cent in November