 FACT: I am always amused at Hollywood portrayals of actors handling  bags of gold. Reality is clearly a missing element. As in this film,  they easily loft and toss them around with ease. I calculate that  the volume of the bags they threw over the edge of the Grand Canyon  could hold two quarts at least. The weight of this volume of gold  would be over ninety pounds. It would take two hands and the use of  the back to lift one bag, let alone lifting and throwing two or  three bags as done by Peter Fonda. Even the weight of the standard  bar of gold which is 7 inches by 3 5/8 inches by 1 3/4 inches is  27.5 pounds. Not easily lifted by one hand as is always shown in  film.