In the Mine
In the yard we were first taken to piles of ore which appeared to an unpracticed eye like heaps of old mortar and broken granite. These piles were near a stream which furnishes power for moving the machinery of the establishment. The ore was exposed to the air and snow, but the coal for smelting was carefully housed. There were many sheds for storage within easy distance of the furnaces. The latter were of brick with tall and substantial chimneys, and the outer walls that surrounded the whole were heavily and strongly built. Charcoal is burned in consequence of the cheapness and abundance of wood. I was told that an excellent quality of stove coal existed in the vicinity, and would be used whenever it proved most economical. Nearly all the ore contains copper, silver, and lead, while the rest is deficient in the last named article. The first kind is smelted without the addition of lead, and sometimes passes through six or seven reductions. For the ore containing only copper and silver the process by evaporation of lead is employed. Formerly the lead was brought from Nerchinsk or purchased in England, the land transport in either case being very expensive. Several years ago lead was found in the Altai mountains, and the supply is now sufficient for all purposes.
The lead absorbs the silver, and leaves the copper in the refuse matter. This was formerly thrown away, but by a newly invented process the copper is extracted and saved. The production of silver in the Altai mines is about a thousand and fifty poods annually, or forty thousand pounds avoirdupois. The silver is cast into bars or cakes about ten inches square, and weighing from seventy to a hundred pounds each.
Colonel Filoff showed us into the room where the silver is stored. Two soldiers were on guard and six or eight others rested outside. A sergeant brought a sealed box which contained the key of the safe. First the box and then the safe were opened at the colonel’s order, and when we had satisfied our curiosity, the safe was locked and the key restored to its place of deposit. The colonel carried the seal that closed the box, and the sergeant was responsible for the integrity of the wax.
The cakes had a dull hue, somewhat lighter than that of lead, and were of a convenient shape for handling. Each cake had its weight, and value, and result of assay stamped upon it, and I was told that it was assayed again at St. Petersburg to guard against the algebraic process of substitution. About thirty poods of gold are extracted from every thousand poods of silver after the treasure reaches St. Petersburg. The silver is extracted from the lead used to absorb it, the latter being again employed while the former goes on its long journey to the banks of the Neva.
The ore continues to pass through successive reductions until a pood of it contains no more than three-fourths a zolotink of silver; less than that proportion will not pay expenses. I was told that the annual cost of working the mines equaled the value of the silver produced. The gold contained in the silver is the only item of profit to the crown. About thirty thousand poods of copper are produced annually in this district, but none of the copper zavods are at Barnaool.