Analysis of information sources in references of the Wikipedia article "Comstock Lode" in English language version.
The Comstock Lode may truthfully be said to be the tomb of the Sierras. Millions upon millions of feet of lumber are annually buried in the mines, nevermore to be resurrected. When once it is planted in the lower levels, it never again sees the light of day. …For a distance of 50 or 60 miles, all the hills of the eastern slope of the Sierras have been to a great extent denuded of trees of every kind; those suitable only for wood as well those fit for the manufacture of lumber for use in the mines.