This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Malakoff Diggings from Columbia Hill North Bloomfield Gravel Mining NYPL bGF F. en Malakoff Diggings from Columbia Hill North Bloomfield Gravel Mining nypl org Scan by NYPL Malakoff Diggings from Columbia Hill North Bloomfield Gravel Mining Watkins' Pacific Coast no Hydraulic mining Mineral industries Environmental aspects The