How long does it take to make sugar from the sugar cane to the finished product?

If you watch this video on You Tube (see link in the related links below), you will see that the entire process to get refined sugar takes at the least 10 hours or more. It is boiled in one set of chemicals for 6 hours, and another set of chemicals for 2 hours, and those were the ones they mentioned.

There are a few processes that occurred in the video that they did not give times for the length that they were exposed to.