In January, 1848, gold was discovered at a mill that was owned by a man named Sutter. The person who found it was a laborer named Marshall. He was doing his chores, and he came across some small pieces of gold (but of course he didn't know) and pounded it out and it was GOLD.
G-O-A-L-D or G-O-L-D, that "Mettle" was gold. He told Sutter and thus started the California gold rush!
Although this is a short written narration, it contains the main idea, provides important details, is properly sequenced, and tells about the event in an interesting way.