IMAA Awards
Andy Williams Receives 2019 Keystone Award
IMAA started awarding the Keystone Award in 1998. By definition the keystone is the topmost stone of an arch, popularly thought of as “especially holding the others in place.” This year, IMAA recognizes another person for his impact on the Indiana aggregate industry. IMAA congratulates Andy Williams for receiving the 2019 Keystone Award. “The Keystone […]