Passport Potash has posted a new presentation about their work on the Holbrook basin potash deposit, including a map of their land holdings and results from their first core drilling [right, credit Passport Potash]. The company reports KCl values of 11.17% to 23.42% in prospective intervals. These look generally comparable to figures reported by Arkla in the 1960's.
Goodinfo's Blog "About Nothing" has been covering Passport extensively and he passed along links to two photo sets from last week's company tour of the exploration site.
Goodinfo, who is also an investor in Passport, argues that a mine in Arizona can be put into production in 3-5 years for $750 million to $1 billion, compared to 10 years and $5-12 billion in capitalization for a Canadian mine. If those numbers hold up, that will be a significant advantage for Arizona's deposit to be developed.