Annotated X-radiograph showing internal features of a sand cast: threaded repair plugs (blue overlay), core vents (yellow overlay), core support (orange overlay), and nuts that secure the horse to the base (green overlay). Charles Marion Russell (American, 1864–1926), Medicine Whip, modeled 1911, sand cast 1912–16, H. 14.8 cm (Gilcrease Museum, Tulsa, 0837.14).