Skip to main content
U.S. flag

An official website of the United States government

Amy Gartman and Jim Hein

By Pacific Coastal and Marine Science Center April 2019 (approx.)
A man and a woman, both wearing hats, examine a rock on a dirt trail with trees in the background.
Original Thumbnail Medium

Detailed Description

Amy Gartman (left) and Jim Hein examine a rock at Almaden Quicksilver County Park, the site of the New Almaden quicksilver mine, which operated from the mid-1800s to the early 1900s. The mine supplied mercury for processing gold ore during the California Gold Rush.

Sources/Usage

Public Domain.