I heard an ancient order extracted the copper from the Grand Canyon in 1645, but there was nowhere to store that much. So they buried it in what we call "copper mines" all over the world. Using forgotten old world technology. Really these are just ancient caches to keep the copper market under control. The order would unearth new caches every few years. All this was discovered by our founding fathers and the locations were recorded in the declaration of independence by Benjamin Franklin. The secret was well kept for years and only shared only within the elite order of Free Masons, called the The Coppers. Just to distract you from the fact that in 1998, The Undertaker threw Mankind off Hell In A Cell, and plummeted 16 ft through an announcer's table.