The Silverado Silver Mine is near Calistoga, California. California's Mines After the Gold Rush . LLC Kennedy Hills Materials SMP00159R1 91-33-0019 Moreno Valley Active Vulcan Materials Jack Rabbit Canyon SMP00153 91-33-0009 Moreno Valley Reclaimed KEC Corp. River Road Sand Removal RCL00151 91-33-0083 Norco Active

The Silverado Silver Mine was closed at the time of data entry with no known plans to re-open. Historically the site has been part of the Calistoga Mining District. 1 California has 4,426 prospect mines. The California Geological Survey (CGS) produces Mineral Land Classification (MLC) studies that identify areas with potentially important mineral resources that should be considered in local and regional planning. A recent mining operation that was properly permitted Mammoth Mine Open Air Roasting at Iron Mnt. Now, before getting too excited, keep in mind that the new laws are nowhere near the “top to bottom” reform called for by Brown in 2013. The California Coast Ranges of the Pacific Mountain System characterize the geomorphology of the surrounding area. 1 California has 4,426 prospect mines. OSMRE's business practices are to reclaim abandoned mine lands (Title IV), regulate active coal mines (Title V), and apply sound science through technology transfer.

CALIFORNIA MINES. The California Department of Conservation's Division of Mine Reclamation (DMR) compiles data on the current status of mines and the commodities produced. Prior to this time period, reclamation of mines, including addressing water quality issues, was very limited if it occurred at all. Now, before getting too excited, keep in mind that the new laws are nowhere near the “top to bottom” reform called for by Brown in 2013. According to the U.S. Energy Information Administration (EIA), there were 853 coal mines in the U.S. in 2015, producing a total of 896,941 thousand short tons of coal. The most commonly listed primary commodities in California mines are Gold , Silver , and Copper . Rare Gems and Minerals in California. contemporaneous surface subsidence that can be Technical terms used herein are defined in the glossary, p. 25. more accurately forecast than subsidence caused by room-and-pillar mining. above Kennett, CA. At the time these mines were surveyed, 5,881 mines in California were observed to have ore mineralization in an outcrop, shallow pit, or isolated drill hole—known as an occurance mine. There is still plenty of gold here left to find. The current state of knowledge of subsidence permits a more detailed discussion of longwall-induced subsidence than of the other forms. Underground gold mines were once commonplace in California, but few active underground operations are left today. SMARA refers to these mines as “Historic Abandoned Mines”. The following table lists the coal mines in the United States that produced at least 4,000,000 short tons of coal.