Below is the Ft. Knox Gold Mine website. They have 7 pictures of the mine that give a good overview of it. The site has some facts about the site as well, such as ownership, location, kind of mine (open pit), production for previous year, etc.
Below is a video about the Ft. Knox Gold Mine. It is a news broadcast as a result of a accidental death, but they give a lot of good information and the visuals are awesome!
Below is a link to a video that does a very good overview of a placer mine (this is actually an advertisement for a gold mining conference that was held here in Fairbanks in 2010, but the advertisement doesn’t come until the end). VERY good video and gives a good look at how gold mining isn’t cheap and isn’t always successful.