Ann: MHM US Site Selection and Incentives , page-4

"When all is said and done, I expect this facility will recycle up to 25% of the salt slag and black dross produced in the United States"
"The anticipated processing capacity of the Russellville facility remains 200,000-250,000 tonnes per annum and potentially higher in due course."

someone said US produced 1mtpa of salt slag, dunno about the dross so based on 25% of salt slag alone is 250ktpa so the expected throughput seems not high enough to process 25% of salt slag and dross,imo Or in other word, it should reach 250ktpa capacity without doubt.