The chart with the ranking is on the 4th page.
I can't find the most recent Lancet article mentioned in the article.
My concern with these rankings is that they don't seem to control for the number of people using the drug. Alcohol kills more people and has higher social costs largely because it's used by more people. However, for an individual user, crack or heroin is far more harmful than alcohol. So saying "alcohol is more harmful than heroin" might confuse some people. Also, if those drugs were legalized, their use might go up, thereby moving them higher up according to Nutt's rubric.
I would like to see a ranking that compares the damage these drugs do to an individual person. For instance, is it worse for your health to get intoxicated on a weekly basis with alcohol, or marijuana?