Madden, John, Power, John, Magnan, S.G., Lewis, R.N., Kelly, F.P., Travers, Daniel, and Hartig, Larry (signatories), 2011, Alaska interagency operating plan for volcanic ash episodes, 60 p.
old ash plan from 2004 : 1.72 MB
old ash plan from 2008 : 907 KB
current ash plan, 2011 : 4.7 MB