Right! Even within 50 miles of the green capital of the USA, the San Francisco bay area, there are major coal mines. The mines were mothballed 50 years ago, but they are still there.
In the other direction from Babylon by the Bay, just south of San Jose is what at one time was the largest heavy metal mine in the world. Mercury, lead and silver. There are other major mines of this type, and more ex-coal mines, to the south. The mine region continues south in the coast range until it merges with an oil region, which is still pumping.