Thomas-Garrett Hall and the Libra Complex are open from 8:00 a.m. to 6:00 p.m., Monday through Friday. Entrance to the Complex at other times is obtained by using the coded locks. The Dean of Faculty will notify authorized users (including all Harvey Mudd College students, faculty and staff) of the access code. Permission to enter individual rooms in the academic complex during off hours is determined by the academic departments. Keys may be obtained through the departments.

A list of persons authorized to have access, and the special regulations applying to the use of the facilities, may be posted by the appropriate academic department, shop or computer laboratory personnel. Authorized persons must be familiar with these regulations and observe them responsibly.

Authorized persons are also responsible for closing doors and preventing access by unauthorized persons. Buildings are checked periodically by Campus Safety. If doors are found propped open or if unauthorized persons are present, the building may be cleared of people and access privileges may be revoked.

Those students, faculty or staff who possess keys to any building or classroom may not copy or transfer the key. According to the California Penal Code, Section 466, possession of any unauthorized key or one that has been illegally duplicated is prohibited.