Mix together all the dry ingredients. Add the butter, shortening, milk, eggs and orange juice. Mix thoroughly. Spoon batter into greased muffin pans until 2/3 full. Top each muffin with an orange section. Bake in a preheated 375 degree F. oven for 20 to 25 minutes. Makes 3 dozen muffins. Entered into MasterCook by Terri Law, 8/22/96. Recipe By : Sue Wilcott of Edwards Mansion