File:Ashfall from Pinatubo, 1991.jpg
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Ashfall from Mount Pinatubo's 1991 eruption. From http://vulcan.wr.usgs.gov/Volcanoes/Philippines/Pinatubo/images.html.
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This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy. български | català | Deutsch | English | español | eesti | suomi | français | galego | italiano | 한국어 | македонски | മലയാളം | Nederlands | polski | português | русский | Türkçe | 中文 | 中文（简体） | +/− |
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Snowlike blanket of tephra deposit of June 15, 1991, about 9 cm thick, in the eastern part of Clark Air Base, about 25 km east of Mount Pinatubo.
Photograph by R.P. Hoblitt.
See Fig. 13 at
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