radioactive rain that fell on Hiroshima and Nagasaki following the atomic bombings of 19451996, Ōe, Kenzaburō, Hiroshima Notes (in English, translated from Japanese), Grove Press, 0802134645, page 192:
rain contaminated by fungi spores, soot, or other particulate matter1902, The New International Encyclopædia (in English), Dodd, Mead and Company, page 81: