so where to from here?, page-41

"Obviously the Al companies are not convinced that the technology works and are not prepared to sign MHMs preferred contract."

Obviously, some of us do not read company announcements, cannot comprehend them or have problems with English.
The nature of the perceived risk has been explained as the uncertainty in the material composition of salt slag.
It is more convenient and certain for the secondary smelters to pay us tipping fee for their salt slag because they believe the amount of extracted aluminium may be lower than what MHM claim. Therefore the value of the recovered material cannot be predicted with absolute certainty.

Risks create opportunities. If MHM management know their stuff, we may in fact be better of with the tipping fee because we may earn more from selling the recovered material than giving it back to the secondary smelter at a predetermined price.