Paul,
Great pictures!
As I was looking at these images, a funny thought came to mind ... and I am sure you have had the same too;
"What the People watching you take pictures of this stuff, must be thinking"
I usually see puzzled expressions on Peoples' Faces - kind of a "What is so interesting over there" expression!
Anyhow, the H.V. Conductors appear to be Insulated with a Green Colored type of Jacket, which is not very common in my area.
Some older 2 KV through 4 KV Primary feeders have "The Remains Of" what appears to be Impregnated Cloth weave covered Rubber Insulation.
Scott35
BTW, what's the Nominal / rated Voltage in these pictures - something in the 10 KV range?