Here's a link to an article - AFR 29th October 2018 with a couple of extracts below from it …
It appears Senex were having a crack at Ironbark - maybe still are??? …
But what IS interesting from Blue's point of view is the valuation for the reserves at Ironbark:
…. $296 mil for 3P of 192 PJ
… At "814" Blue has 2P of 78 PJ and 3P of ~ 300 PJ..! (not to mention 3C of 3000 PJ thrown in for good measure). No more need be said methinks.