Mxsmanic wrote
FIRST 1800 FT OF RY 18 DETERIORATING WITH POT HOLES AND SEVERE
CRACKING.
From this I inferred that the entire runway was just a thin layer of
asphalt.

Ah yes...That 1800' is the extansion that was added after I left,
and one of the reasons that I did leave.

At light weights, the original r/w was long enough to accommodate
the required accelerate/stop distance for a B-707, but not long
enough to reach Vmcg before reaching V1, so V1 had to be increased
to the higher Vmcg speed. Arthur Jones, although a pilot himself,
did not seem to understand this concept. We argued about the safety
issue. The Cuban pilot who replaced me seemed unaware of the issue.

In a Google Earth view, one can see that the extension (dark) was
added at an angle to the original (light) pavement. It was added
only to allow stopping from the higher (Vmcg) V1 speeds, and is
indeed marked as stopway with a displaced threshold. The displaced
threshold on the other end is to clear the rather high circular
concrete blast fence.

Bob Moore