Did the Federal government poison alcohol during prohibition?

I knew that alcohol poisonings increased during prohibition, but I assumed that it all was due to ensure quality. From Slate:

Although mostly forgotten today, the "chemist's war of Prohibition" remains one of the strangest and most deadly decisions in American law-enforcement history. As one of its most outspoken opponents, Charles Norris, the chief medical examiner of New York City during the 1920s, liked to say, it was "our national experiment in extermination." Poisonous alcohol still kills—16 people died just this month after drinking lethal booze in Indonesia, where bootleggers make their own brews to avoid steep taxes—but that's due to unscrupulous businessmen rather than government order.
I learned of the federal poisoning program while researching my new book, The Poisoner's Handbook, which is set in jazz-age New York. My first reaction was that I must have gotten it wrong. "I never heard that the government poisoned people during Prohibition, did you?" I kept saying to friends, family members, colleagues. . . .