Sift flour, soda and salt together. Cream shortening and sugar, add eggs and beat until fluffy. Add dry ingredients and mashed bananas and buttermilk. Add 3/4 cup nuts. Turn into greased 9 x 5 loaf pan. Bake 350 degrees 60 minutes or until inserted toothpick comes out clean. Oven temps vary, so start checking doneness after 45 – 50 minutes.