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Amount of Ejected Ash and Pumice of The Kelud Eruption in 1919
When we venture a calculation of the amount of the ejected ash and punice, then it goes without saying, that we can only estimate. The statements concerning the amount of the fallen-down ash, are mostly inaccurate and incomplete. Moreover, when we are willing to fix the correct amount of ash, we ought to know the specific gravity and to take into account the thickness of the locally fallen ash layer. Valuable data were received from Dr. Wurth, director of the experimental station Malang.
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