I am with Roger and RODALCO I would not give up until I actually broke the conductors.
I would cut each end of the raceway back as close to where it goes underground (without cutting the conductors) than I would prefer a large (5 ton) at least chain fall to start the pulling.
But heavy equipment if available is always helpful.
The last all terrain folk lift I rented had a draw bar rating of just under 20,000 Lbs.
