Drive along the public roads and see if it is possible to get pieces of diatomaceous earth. The mine itself is private (no trespassing).
Diatomite Mines (Diatomite Pit North), Quincy, Grant County, Washington, USA(mindat.org) Diatomite - middle Miocene (∼15 Ma) freshwater lacustrine deposit located between flows of the Columbia River Basalt Group.
James Buchanan Jr. was born into a Scottish-Irish family on April 23, 1791, in a log cabin on a farm called Stony Batter, near Cove Gap, Peters Township, in the Allegheny Mountains of southern Pennsylvania.