![Inclined railway into 8,000-foot shaft at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB011.JPG) | ![View down inclined shaft at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB013.JPG) | ![Stamp mill machine to crush gold ore at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB021.JPG) | ![Gold mining ruins at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB022.JPG) |
Inclined railway into 8,000-foot shaft at Empire Mine State Historic Park. Grass Valley, CA. On National Register. | View down inclined shaft at Empire Mine State Historic Park. Grass Valley, CA. | Stamp mill machine to crush gold ore at Empire Mine State Historic Park. Grass Valley, CA. | Gold mining ruins at Empire Mine State Historic Park. Grass Valley, CA. |
![Collection of machines used in gold mining at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB024.JPG) | ![Gold extraction building & machine at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB027.JPG) | ![Office building at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB031.JPG) | ![Office building at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB032.JPG) |
Collection of machines used in gold mining at Empire Mine State Historic Park. Grass Valley, CA. | Gold extraction building & machine at Empire Mine State Historic Park. Grass Valley, CA. | Office building (1898) at Empire Mine State Historic Park. Grass Valley, CA. Architect: Willis Polk. | Office building (1898) at Empire Mine State Historic Park. Grass Valley, CA. |
![Steel safe by Victor Safe & Lock Co. in office at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB033.JPG) | ![Desks in office at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB034.JPG) | ![Work table & rock samples in office at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB035.JPG) | ![Drafting table in office at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB036.JPG) |
Steel safe by Victor Safe & Lock Co. in office at Empire Mine State Historic Park. Grass Valley, CA. | Desks in office at Empire Mine State Historic Park. Grass Valley, CA. | Work table & rock samples in office at Empire Mine State Historic Park. Grass Valley, CA. | Drafting table in office at Empire Mine State Historic Park. Grass Valley, CA. |
![Office at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB038.JPG) | ![Empire Clubhouse, home of mine manager & guest house, at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB041.JPG) | ![Octagonal shingled tower of Empire Clubhouse at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB043.JPG) | ![Cottage at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB051.JPG) |
Office at Empire Mine State Historic Park. Grass Valley, CA. | Empire Clubhouse, home of mine manager & guest house, at Empire Mine State Historic Park. Grass Valley, CA. | Octagonal shingled tower of Empire Clubhouse at Empire Mine State Historic Park. Grass Valley, CA. | Cottage (1896) at Empire Mine State Historic Park. Grass Valley, CA. Architect: Willis Polk. |
![Front doorknob of Cottage at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB055.JPG) | ![Dining room of Cottage at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB057.JPG) | ![Dining room sideboard of Cottage at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB059.JPG) | ![Cottage patio at Empire Mine State Historic Park. Grass Valley, CA.](/t/USCAK/CAGGB060.JPG) |
Front doorknob of Cottage at Empire Mine State Historic Park. Grass Valley, CA. | Dining room of Cottage at Empire Mine State Historic Park. Grass Valley, CA. | Dining room sideboard of Cottage at Empire Mine State Historic Park. Grass Valley, CA. | Cottage patio at Empire Mine State Historic Park. Grass Valley, CA. |