Cut the shortening into the flour and salt. Gradually sprinkle on the cold water until flour is moistened and the dough cleans the side of the bowl. Gather into a ball, flatten and chill for 15 minutes.
Roll out and fit into a 9-10" pie pan. Sprinkle the bottom with ground pecans.
Mix together the filling ingredients, pour into the prepared crust and bake at 425° for 15 minutes. Lower to 350° and bake for an additional 40-45 minutes.