too hard to understand, page-11

There could be difference in the landfill design and how the waste was covered over.

But I do know thorough testing was done on the Moolap landfill:

In January 2005, Alcoa of Australia Pty. Limited, trading as Alcoa World Alumina Australia
(Alcoa), and the Three Party JV entered into a contract that permitted up to 2,000 tons cf
Salt Slag and aluminum dross from Alcoa's Moolap land?ll site to be used to determine the
feasibility of full-scale recovery and remediation of all Salt Slag and associated material at
Moolap. This contract included the intention that, should the initial trial be successful and
approved by Alcoa, the Environmental Protection Authority (EPA) and Council, the parties
would negotiate an agreement for the recovery and remediation of all Point Henry Salt Slag
land?ll areas on the same principles.
in April 2006, the results of the initial trial were presented to Alcoa and Alcoa agreed with
the viability of the ALNAK technology. in October 2007, the Three Party JV executed a
formal agreement with Alcoa regarding the removal of the Salt Slag at the Alcoa Moolap
land?ll, containing around 160,000 tons of Salt Slag

As to what the market is waiting for? Options, plant fix, Greece etc..