Knox College has renovated one of its oldest buildings without throwing anything away. Last month, it re-opened Alumni Hall. Froggi VanRiper, Director of Campus Sustainability, says beginning in October 2013, the college did a "complete interior overhaul" of the 150 year old building. The changes include structural repairs, new study areas and lounge rooms, and renovations to the large, central atrium. Also, 45 staff members now use previously empty office space in Alumni Hall. And, VanRiper says the construction crew was able to recycle 95 percent of all waste produced.