Heat a large pan to medium high heat. Oil the pan with either butter or vegetable oil. Ladle the pancake batter onto the griddle to the desired size. When air bubbles start to bubble up to the surface at the center of the pancakes use a flat spatula to flip them over, usually about 5 minutes for the first side and about 2 to 3 min for the second side.
In a large bowl, mix the flour, salt, baking powder, baking soda and sugar. In a separate bowl, mix the eggs, buttermilk and milk. Add the wet ingredients into the dry ingredients. Mix until the batter just comes together. Add the melted butter. Mix lightly. Fold in the blueberries with a spatula.