Windswept and foggy, Ocean Beach on San Francisco's Pacific side is frequented mainly by surfers and dog walkers -- and now a prospector. Engineer John O'Grady, 71, believes this desolate spot may be one of the most valuable mineral sites on the West Coast. O'Grady thinks that the sand on Ocean Beach contains tons of titanium, a lightweight metal that the U.S. uses in plane fuselages and the Soviet Union has put into submarine hulls. Ocean Beach's titanium could help supply U.S. defense needs into the next century, says O'Grady -- and, at $40 or more a ton, could be a...
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