Mayflower Gold Mill The American West once had hundreds of precious metal mills. Now, most are in various stages of ruin. One important exception is the Mayflower Mill, (or the Shenandoah - Dives Mill) located two miles northeast of Silverton. A National Historic Landmark, this wonderful piece of mining history is open to the public. Witness first hand how the miners were able to extract gold, silver and base metals from the hard rock ores in this complete processing mill.