José Clemente Orozco's Prometheus:

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Technique and Conservation
Following in the great western mural tradition, Orozco used "true fresco," a demanding and unforgiving technique in which colors are applied to wet plaster. Although relatively durable, the frescoed surface is vulnerable and, once damaged, extremely difficult to restore to its original appearance. Several major conservation efforts have been undertaken on Prometheus in recent years. In 1982, it was discovered that bricks lining the chimney behind the central figure had begun to crumble, endangering the entire wall. In a complex and painstaking process, the wall was reinforced from behind, saving the mural. More recently, the painting has been thoroughly cleaned, small areas of paint loss replaced, and new lights installed.

Like all works of art in public places, Orozco's Prometheus depends for its preservation on those who use the space, in this case, the Pomona students for whom the work was originally created. This great work of art is, thus, both a gift and a responsibility, and it is incumbent upon us all to assure that it is protected for future generations to enjoy.