• Front Matter R1-R14

• Executive Summary 1-4

• 1 Physical Setting and Geologic History 5-11

• 2 The November 13, 1985 Eruption and Subsequent Lahars 12-42

• 3 Performance of Various Structures along the Lahar Paths 43-48

• 4 Preeruption Awareness and Preparedness 49-57

• 5 The Warning Period 58-64

• 6 Disaster Impacts 65-69

• 7 The Recovery Program 70-78

• 8 Posteruption Hazard Watch and Disaster Planning 79-86

• References 87-90

• Appendix A Geologic Setting and Prehistoric Volcanic Activities 91-96

• Appendix B Recommendations for Improving the Existing Warning System for an Impending Eruption of the Nevado del Ruiz Volcano, Colombia, South America: An Advance Report, January/February 1986 97-110

" Front Matter ." The Eruption of Nevado Del Ruiz Volcano Colombia, South America, November 13, 1985 . Washington, DC: The National Academies Press, 1991 .

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