A customer makes a medical marijuana purchase at the Coffeeshop Blue Sky dispensary in Oakland, California June 30, 2010. California, the U.S. state that first allowed sales of medicinal marijuana in 1996, may take away all restrictions on adult use of the drug in a November vote, giving local governments the option to regulate sales and growing of marijuana. Picture taken June 30, 2010. To match Special Report MARIJUANA/CALIFORNIA REUTERS/Robert Galbraith (UNITED STATES - Tags: AGRICULTURE POLITICS BUSINESS SOCIETY HEALTH)