Coal fields of northwestern Colorado and northeastern Utah. The Grand Mesa coal field, Colorado. The coal field between Gallina and Raton Spring, New Mexico, in the San Juan coal region. The coal field between Durango, Colorado, and Monero, New Mexico. The coal field between Gallup and San Mateo, New Mexico. The Harmony, Colob, and Kanab coal fields, southern Utah. The Rogue River Valley coal field, Oregon. A coal prospect on Willow Creek, Morrow County, Oregon. The Pocket coal district, Virginia, in the Little Black Mountain coal field.
No abstract available.
Colorado, New Mexico, Oregon, Utah, Virginia↗