The economic geological resources of Oregon, 1912

Coal -- Oil and gas -- Stone industry -- Lime -- Cement -- Gypsum -- Sand and gravel -- Clay and clay products -- Mineral waters -- Gold, silver, copper and lead -- Minor mineral productsThis archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.At head of title: ... Oregon State Bureau of Mines, Henry M. Parks, directorMode of access: Internet from the Oregon Government Publications Collection