This folder contains correspondence and other documents relating to Edison's dry placer process for the separation of gold ore at the Ortiz Mine in Dolores, New Mexico. Included are reports to Edison and to the Galisteo Co., which had agreed to spend up to $15,000 on the experimental mill.

Approximately 70 percent of the documents have been selected. Documents not selected consist of ore assay tables and items that duplicate information in selected material.