From Piedmont's annual report 28th April 2023 page 5:"We also...

From Piedmont's annual report 28th April 2023 page 5:

"We also hold an offtake agreement with Sayona Quebec for the greater of 113,000 metric tons per year or 50% of spodumene concentrate production at market prices, subject to a price floor of $500 per metric ton and a price ceiling of $900 per metric ton, on a life-of-mine basis.

For Sayona Quebec to proceed with the construction and operation of a lithium carbonate conversion plant or lithium hydroxide conversion plant, approvals are required from both Piedmont Lithium and Sayona Mining.

In the event Piedmont Lithium and Sayona Mining decide to jointly construct and operate a lithium conversion plant through their jointly-owned entity, Sayona Quebec, then spodumene concentrate produced from NAL would be preferentially delivered to that conversion plant upon commencement of conversion operations. Any remaining spodumene concentrate not delivered to a jointly-owned conversion plant would first be delivered to Piedmont Lithium up to our offtake right and then to third parties.From Piedmont's annual report from 28th April 2023"

My take on this is that Piedmont don't have to agree to a lithium conversion plant and can keep the off take arrangement going as long as the mine operates. How much feedstock does a lithium conversion plant require to be feasible?