0250 GMT [Dow Jones] Cost of insuring against bond default by Australian mining companies modestly tighter early on new PM Gillard-led government's hint of compromise on mining tax resource, outperforming wider index, notes credit strategist. Rio Tinto (RIO.AU) 5-year CDS last 120-124 bps, 3 bps tighter, BHP Biliton (BHP.AU) CDS last 82-86 bps, 2 bps tighter. Index last 125-126.5 bps, 1 bp tighter. ([email protected]) Contact us in Singapore. 65 64154 140; [email protected] (END) Dow Jones Newswires June 23, 2010 22:50 ET (02:50 GMT)