 The Canadian Natural Resources Limited Engineering Complex is the newest addition to the main engineering complex.Officially opened to the public in November 2016 (it had been used for classes and labs since September 2016), the CNRL complex is a $174 million building meant to increase enrollment capacity in the engineering department by 400 seats and to provide new classroom and lecture hall facilities.The building was named in honour Canadian Natural Resources Limited for the company's $7 million donation, the largest single donation the University of Calgary has received to date.