| Reference | WHITNEY, J.W., 1982, PRELIMINARY GEOLOGICAL INVESTIGATION OF THE B* HAYZAN DIATOMITE DEPOSIT, KINGDOM OF SAUDI ARABIA, WITH A SECTION ON SELECTED PHYSICAL PROPERTIES AND IMPLICATIONS FOR FUTURE GEOPHYSICAL EXPLORATION BY MARK E. GETTINGS: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-1046, 25 P |