Actress Zienia Merton affirms this episode furthered her belief that director Charles Crichton owned significant shares in the company which produced Fuller's earth, the dust-like substance used in films to simulate explosions, create sand- or dust-storms, or age props or costumes.
Zenia Merton, an actress, reiterates that this episode reinforced her opinion about director Charles Crichton's possible financial ties to the company producing Fuller's earth, a dusty material used in films to mimic explosions, generate sandstorms, or weather down props and costumes.