What does the legendary gold rush in California have to do with studs on denim trousers? The first target market for jeans manufacturers were the gold prospectors. As they always put their finds directly into the pockets of their work clothes, these soon tore and needed strengthening. There are many stories like this in the history of jeans. But where does the name jeans come from, and the word denim - and what role does a German chemical company play in jeans fashion? Great Inventions provides the answers.