
Dept. of Agriculture @USDA
Known as the “Ice Woman” of the “Cold Chain,” Dr. Mary Engle Pennington revolutionized the food supply & distribution system by developing safe & sanitary methods for processing, storing & shipping dairy products, poultry, eggs & fish #InternationalWomensDay #WomensHistoryMonth https://t.co/Zg6CuBMgUQ — PolitiTweet.org