National Blue Key is a premier honor society established in 1924 that recognizes college students at institutions of higher education for balanced and all-around scholarship, leadership, and service. The CSM Blue Key Chapter, chartered in 1926, is a respected campus organization and one of the oldest Blue Key chapters. Its purposes:
(1) To promote Mines spirit
(2) Advocate those ideals of college life which will be of credit to each of us, and to our Alma Mater.