Mostly methane at ONGCآ’s Vashishta-1 discovery Vol 8, PW 24 (09 Mar 05) Exploration & Production Only by the end of this week will ONGC get a rough estimate of the quantity of gas in the Vashishta-1 discovery.... Buy this article forRs590 $9For a 30-article or annual subscription rates click here Data not available in ...