[1] Mellon hall currently serves the Biological Sciences, Chemistry & Biochemistry, and Pharmacy departments of Duquesne University.

[2] The ground floor is set back from the perimeter columns, forming a generous colonnade that wraps around all four sides of the building.

Most of Mies' projects have an odd number of bays (classic order) with a focused entry in the center, but Mellon Hall is an exception because it has 12 structural bays in the long direction and has less assuming split entrances.

The split entrances occur near the entry points of the two back-to-back lecture halls, each seating roughly 250.

[3] The interior spaces on the ground floor have exposed buff brick walls, the same as the exterior.