just a bit of trivia
l noticed the cut off is 10%.
l have a news letter from a company in NZ that effective this month has reduced its cut off level from 9.7% to 9% (pre 1998 levels)....due to demand it can now source from a wider number of mines and keep up with supply. Also pricing it accordingly which is good to see.
l have the article if anybody is interested....l dont know how to post it.