You might not know it from the textbooks, but California's gold rush was also a mercury rush. Quicksilver mines near San Jose provided gold miners with the mercury they needed to separate gold from ore. 150 years later, we're still facing the consequences of gold-rush era mercury, much of which is lodged in the Bay's mud and in its fish.
Historical mercury mining photos courtesy of the New Almaden Mining Museum, with special thanks to Art Boudreault.
Duration:
5:45 Original Air Date:
Friday, Apr 18, 2008
On the QUEST Community Science Blog, KQED QUEST Radio Reporter Amy Standen introduces our first-ever QUEST radio multimedia slideshow, plus an interactive Mercury map of the Bay Area created in honor of Earth Day 2008.
Journey back in time to the birth of the Bay Area's environmental movement. Meet the everyday people who rescued the Bay Area from environmental disaster and continue to inspire a new generation.
California has 11 coal-fired power plants, all used to heat limestone into cement -- making us one of the biggest cement-producing states in the country. These kilns produce 95% of the state's airborne mercury pollution and 2% of its greenhouse gas emissions. Mostly, they've slipped under the radar of regulators, but that is changing fast.
As Chevron hatches expansion plans for one of California's largest oil refineries, Richmond's Green Party mayor considers the future of her city, and the state.
Last week, we took a look at how mercury enters the San Francisco Bay. This week: Now that it's here, how is it affecting us? Quest talks to local fisherman, a physician, and a Bay ecologist to find out how we're contending with the Bay's worst toxin.
Humans use mercury in a variety of manufacturing processes and products such as thermometers and fluorescent bulbs. If you improperly dispose of products with mercury in them, they may break and release mercury vapors which are harmful to human and ecological health.