Wiremold 500 surface metal raceway is an approved grounding conductor, however a grounding conductor wire was pushed in with the other conductors on this job.

The completed Wiremold 5751-2, two gang extension adapter with a GFCI tamper-resistant receptacle and a Leviton tamper resistant, Decora receptacle. The Wiremold 511 flat elbow has its cover on.
The arrow indicates the existing grounding terminal on the original telephone demarcation point.