value of tasllanganda(?)/zola/palmerston(?), page-62

"BHP made the Tallaganda gas discovery earlier this year and says further drilling results show THE AREA HAS HUGE POTENTIAL.
The company says the Tallaganda find has been its biggest discovery in 2012.
A company spokesperson says it is A WORLD CLASS DEPOSIT with significant potential and it opens up a large area close to existing fields" (The emphasis is mine)

http://www.abc.net.au/news/2012-10-01/bhp-to-focus-on-exploration-in-the-kimberley/4289318

They are pretty strong words. What is a "World Class Deposit"?
Encyclopedia Britannica
"The two largest classes of fields are the supergiants, fields with 5 billion or more barrels of ultimately recoverable oil, and world-class giants, fields with 500 million to 5 billion barrels of ultimately recoverable oil"

"For example, the peak year for discoveries of world-class oil field giants, i.e, ultimate recovery of 500 million bbl oil"

"Jubilee is a world-class oil field with estimated recoverable resources of up to 1 billion barrels"

http://www.tullowoil.com/ghana/index.asp?pageid=61