All the smelting is done with charcoal, and consequently the charcoal burners are an important element of the population. The forests of the estate cover many hundreds of square miles, and are managed with great care. Not a tree is cut without the order of an officer, and the work is so arranged that the young trees are protected until they are of suitable size. When a piece of ground has been cleared, it is replanted, and in eighty years it can be cleared again.
THE METALS FOUND.
The iron ore is about a mile from the town, and near the top of a hill, so that it can be rolled directly into the works with very little labor. It is of the kind known as magnetic ore, and the supply is simply inexhaustible. It is worked in an open quarry, no tunneling or shafting being needed, and as the vein is four hundred feet wide, eighty feet thick, and a mile or more in length, there is no danger that the supply will be exhausted for some thousands of years. And if it should be, there are other and larger deposits not far away.
Copper is also found in this vicinity, and not more than two miles from the iron mine. It was first discovered about the beginning of the present century, and has since been worked to great advantage.
The most remarkable product of copper is the substance known as malachite. It is found in various parts of the world wherever there are mines of copper, but nowhere else in such quantities as in the Oural mountains. Malachite is nothing more nor less than an oxide of copper. The chemists know exactly how it is formed, but they cannot make it any more than they can make the diamond, though they understand perfectly well the composition of that highly-prized stone. Certain salts in the earth mingle with the copper ore and the water that finds its way through the earth, and these ingredients, soaking slowly downward into crevices and hollows in the rock, form the substance of which the Russians make so much use.
HOW MALACHITE WAS FOUND.
In 1885 the largest mass of malachite ever known was found on the Demidoff estate. The miners, who were working a vein of copper, found some shreds or strips of copper extending downward, and the superintendent of the mine ordered them to follow these shreds, in hopes of striking another vein. The work was pushed forward, or rather downward, and the stray threads of ore were traced in all their windings. Two hundred and eighty feet below the mine, the shreds disappeared, and the superintendent was about to give up the enterprise in disgust and despair, when the men suddenly came upon a huge mass of malachite. It was broken up and taken to the surface, and the aggregate weight of the mass was estimated at seventy tons! It was this lot that supplied the most of the malachite in the Church of St. Isaac, and from it, also, was made the enormous vase which the Emperor of Russia sent to His Holiness the Pope.
We use malachite for jewelry, and think it very good; those of us who have been in St. Petersburg will recall the Church of St. Isaac, where there are whole columns apparently of solid malachite. I say apparently, for those columns are of granite, with a malachite veneering an inch or two in thickness, for the reason that the material does not come in sufficiently solid shape to be used for making columns. It is a good deal honey-combed, and there are numerous vacant places in a large block of it. There was a block of malachite in the Paris Exposition which measured something like seven feet in length by four in width, and there was a nicely-polished spot on one side, a couple of feet in length, and a foot and a half in width. This was said to be one of the largest solid blocks of the material in Russia, and it was regarded as a great curiosity by many thousands of visitors. At the Philadelphia Exhibition in 1876, there was much interest manifested in the Russian department, in consequence of the fine display of this article. There was a fire-place whose mantel and side-pieces were solid slabs of malachite. Then there were two or three large vases and other ornamental pieces, all of the same material; and very rich they were. People were never weary of gazing upon these things and commenting on their beauty.