Of the minor products of mines and quarries, marble, sandstone, borax, salt, and asphalt are all known to be more or less thoroughly under the control of monopolies, which, though less important and powerful, show the same tendency toward the destruction of competition.
Great as is the extent to which the monopoly of the mineral wealth of the world has gone, we can scarcely doubt that if the movement is unchecked it will go much farther. In one sense the only absolute necessaries of life are food and clothing. But to the civilization of to-day the metals and minerals are no less indispensable; and these cannot be made anywhere, like manufactured goods; or grown on wide areas, like the products of the soil. We are absolutely at the mercy of the men who own our deposits of coal and copper and lead, and it is only to be expected that they will take greater advantage of their legal industrial advantage. The combinations that exist will be made stronger and more binding, and new ones will be formed. The French copper "corner" has taught men that under the broad protection of International law their schemes of industrial conquest may embrace the world; and it is not to be doubted that the temporary "corner" will yet result in a strong permanent combination; and that the precedent set by this successful monopoly will be eagerly followed by those who wish to secure like profits by the control of some other form of mineral wealth.