Scientific Investigations Report 2011–5041
Figure 13. Hydraulic mining in the Olalla District, Lookingglass Creek drainage, Oregon. Photographs courtesy of Douglas County Museum. (Photographs (A) N5155a and (B) N5155b.) |
First posted September 29, 2011 For additional information contact: Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |