The Paradox, Uravan and Placerville's main haulage is mineral ore and coal during WWII. Vanadium, ,uranium and copper are the main minerals hauled as part of the war effort. The Uranium ore is listed on the manifests are copper ore and copper ore is listed as "honest to God copper" in keeping with war dept directives. Th' PUP connects with the RGS in Placerville and is a private line operated by a mining consortium serving many mines west of Placerville out to the Paradox valley.