Lead mines were likewise discovered in the neighborhood of Sonoma, and vast beds of iron ore near the American Fork, yielding from eighty-five to ninety per cent. Copper, platina, tin, sulphur, zinc, and cobalt, were discovered every where; coal was found to exist in large quantities in the Cascade range of Oregon, of which the Sierra Nevada is a continuation; and in the vicinity of all this mineral wealth, there are immense quarries of marble and granite, for building purposes.
Colonel Mason had succeeded Colonel Fremont in the post of governor of California and military commandant. A regiment of New York troops, under the command of Colonel Stevenson, had been ordered to California before the conclusion of the treaty of peace, and formed the principal part of the military force in the territory.
Colonel Mason expressed the opinion, in his official despatch, that "there is more gold in the country drained by the Sacramento and San Joaquin rivers, than will pay the cost of the [late] war with Mexico a hundred times over." Should this even prove to be an exaggeration, there can be little reason to doubt, when we take into consideration all the mineral resources of the country, that the territory of California is by far the richest acquisition made by this government since its organization.
The appearance of the mines, at the period of Governor Mason's visit, three months after the discovery, he thus graphically describes:
"At the urgent solicitation of many gentlemen, I delayed there [at Sutter's Fort] to participate in the first public celebration of our national anniversary at that fort, but on the 5th resumed the journey, and proceeded twenty-five miles up the American Fork to a point on it now known as the Lower Mines, or Mormon Diggins. The hill-sides were thickly strewn with canvas tents and bush arbors; a store was erected, and several boarding shanties in operation. The day was intensely hot, yet about two hundred men were at work in the full glare of the sun, washing for gold--some with tin pans, some with close-woven Indian baskets, but the greater part had a rude machine, known as the cradle. This is on rockers, six or eight feet long, open at the foot, and at its head has a coarse grate, or sieve; the bottom is rounded, with small cleats nailed across. Four men are required to work this machine; one digs the ground in the bank close by the stream; another carries it to the cradle and empties it on the grate; a third gives a violent rocking motion to the machine; while a fourth dashes on water from the stream itself.