If one California marijuana company has its away, a vacant California prison that once housed inmates could serve a surprisingly different function. The Fresno Bee reports, the cannabis concentrate producer in Southern California, Ocean Green Extracts, wants to turn the defunct Claremont Custody Center into a marijuana grow and cannabis oil production center. Ocean Green pitched the idea to the Coalinga mayor and city manager last month, and, according to the Bee, the city council supports the prison-to-pot proposal.