Morning visited Washington, and bought a stone warehouse near the foot of Sixth Street. He purchased a similar building in Philadelphia, near the Pennsylvania Railroad freight depot, and he bought a third warehouse alongside the track of the New Jersey Central at Hoboken. He caused switches to be constructed into each of these warehouses, and provided each of them with heavy iron shutters and doors. He employed four watchmen for each building, divided into day and night-watches of six hours each. He arranged that the copper-pigs containing gold should be loaded on the cars at Tucson by his own men, who were themselves unaware that they were handling anything but copper, and the cars locked and sent in train-load lots through, without change or rehandling, to New York, Philadelphia, and Washington, where they were run into his warehouses and there unloaded. It was given out that he was at the head of a copper syndicate, and was storing the surplus product of the mines for higher prices. His plans worked with perfect smoothness, and his wealth accumulated openly at the rate of four millions per month, and secretly at the rate of one hundred millions per month, with a vast amount of newspaper comment concerning the four millions, and no suspicion anywhere as to the real sum. The advocates of free coinage of silver, who were defeated in the Congress of 1889–90, renewed their contest in the Congress of 1891–92, and in February, 1892, a free coinage law passed, but it was vetoed by President Harrison. The silver men carried the fight into the presidential election of 1892, and were so far successful that Congress, in February, 1894, enacted a law the text of which was as follows:— “From and after July 1, 1894, any person may deposit at the treasury of the United States in Washington, or at either of the sub treasuries in Boston, New York, Philadelphia, Chicago, St Louis, New Orleans, Denver, or San Francisco, gold or silver bars of standard fineness, and receive the coined value thereof in United States treasury notes. The secretary of the treasury is authorized and directed to prepare and keep on hand a sufficient amount of treasury notes to comply with the provisions of this act.” The influence of Morning as the largest single producer of gold in the world, as the owner already of thirty millions of dollars, and, if his mine should hold out for five years, of a sum that would cause him to outrank any millionaire in the world, was very great, and that influence, legitimately exercised in behalf of free coinage, proved very potent with senators and representatives, and did much to reconcile the adherents of a single gold standard to the overthrow of their system.