ASN - Capital cost around 500m. That might be a good metric to keep any of the stocks in this thread for comparison. Advantages i can see, is that low environmental foot print.
All things consider probability are approvals and finance. Approvals is a must. Then finance is tied to economics. Helps if the lower the capex, smaller risk to financiers, and less potential dilution if equity involved. Interesting Bromine credit. LCE developer.