bhp out of jv, page-4

According to the recent announcement,it appears that
extended drilling is about to commence at Prominent Hill.
I guess they are still trying to prove up the site.I ask-
if BHP wish to divulge their 51%,then what is it worth?.
What measurement/results will help determine their
protion.I would greatly appreiciate any learned opinions.
Profits to all.BMD.