Deep Down, a Tale of the Cornish Mines. Robert Michael Ballantyne
Читать онлайн книгу.
and perched in fantastic forms in dangerous-looking places.
Here, amid the most savage gorges of the sea and riven rocks—half clinging to the land, half suspended over the water—is perched the machinery of, and entrance to, the most singular shaft of the mine, named the “Boscawen Diagonal Shaft.” This shaft descends under the sea at a steep incline. It is traversed, on rails, by an iron carriage called the “gig,” which is lowered and drawn up by steam power. Starting as it does from an elevated position in the rocks that are close to the edge of the sea, and slanting down through the cape, outward or seaward, this vehicle descends only a few fathoms when it is under the ocean’s bed, and then its further course is far out and deep down—about two-thirds of a mile out, and full 245 fathoms down! The gig conveys the men to and from their work—the ore being drawn up by another iron carriage. There is (or rather there was, before the self-acting brake was added) danger attending the descent of this shaft, for the rope, although good and strong, is not immaculate, as was proved terribly in the year 1864—when it broke, and the gig flew down to the bottom like lightning, dashing itself to pieces, and instantly killing the nine unfortunate men who were descending at the time.
Nevertheless, the Prince and Princess of Wales did not shrink from descending this deep burrow under the sea in the year 1865.
It was a great day for St. Just and Botallack that 24th of July on which the royal visit was paid. Great were the expectation and preparation on all hands to give a hearty welcome to the royal pair. The ladies arrayed themselves in their best to do fitting honour to the Princess; the balmaidens donned their holiday-attire, and Johnny Fortnight2 took care, by supplying the poor mine-girls with the latest fashions, that their appearance should be, if we may be allowed the word, splendiferous! The volunteers, too, turned out in force, and no one, looking at their trim, soldierly aspect, could have believed them to be the same miners who were wont to emerge each evening through a hole in the earth, red as lobsters, wet, ragged, and befouled—in a word, surrounded by a halo of dishevelment, indicative of their rugged toils in the regions below.
Everywhere the people turned out to line the roads, and worthily receive the expected visitors, and great was the cheering when they arrived, accompanied by the Duke and Duchess of Sutherland, the Earl of Mount Edgecumbe, Lady de Grey, Lord and Lady Vivian, General Knollys, and others, but louder still was the cheer when the Princess rode down the steep descent to the cliffs in a donkey-carriage.
The Botallack cliffs themselves, however, were the central point, not only of the interest, but of the grandeur of the scene, for here were presented such a view and combination as are not often witnessed—nature in one of her wildest aspects, combined with innumerable multitudes of human beings swayed by one feeling of enthusiastic loyalty. Above, on every attainable point, projection, and eminence, men and women clustered like gay flies on the giant cliffs, leaving immense gaps here and there, where no foot might venture save that of a bird. Midway, on the face of the precipice, clung the great beams and supports of the Boscawen Diagonal Shaft, with the little gig perched on them and the royal party seated therein, facing the entrance to the black abyss—the Princess arrayed in a white flannel cloak trimmed with blue, and a straw hat with a blue ribbon round it, and the Prince clad in miner’s costume. Underneath, a dizzy depth to gaze down, lay the rugged boulders of the shore, with the spray of the Atlantic springing over them.
Deafening was the cheer when the gig at last entered the shaft and disappeared, and intense the anxiety of the vast multitude as they watched the descent—in imagination, of course, for nothing could be seen but the tight wire-rope uncoiling its endless length, and disappearing like a thin snake down the jaws of some awful sea-monster that had climbed so far up the cliffs to meet and devour it! Now they are at the shore; now passing under the sea; fairly under it by this time; a few minutes more and they have reached the spot where yonder seagull is now wheeling above the waves, wondering what new species of bird has taken possession of its native cliffs. Five minutes are passed—yet still descending rapidly! They must be half a mile out from the land now—half of a mile out on the first part of a submarine tunnel to America! “Old England is on the lee,” but they are very much the reverse of afloat; solid rock is above, on either side and below—so close to them that the elbows must not be allowed to protrude over the edge of their car, nor the head be held too high. Here even royalty must stoop—not that we would be understood to imply that royalty cannot stoop elsewhere. Those who dwell in Highland cottages could contradict us if we did! Presently the rope “slows”—the lower depths are reached, and now for some time there is patient waiting, for it is understood that they are examining the “levels,” where the stout men of Cornwall tear out the solid rock in quest of copper and tin.
After a time the thin snake begins to ascend; they are coming up now, but not so fast as they went down. It is about ten minutes before the gig emerges from that black hole and bears the Prince and Princess once more into the light of day.
Yes, it was a great day for Botallack, and it will dwell long in the memories of those who witnessed it—especially of that fortunate captain of the mine who had the honour of conducting the Princess on the occasion, and of whose enthusiasm in recalling the event, and in commenting on her intelligence and condescension, we can speak from personal observation.
But, reader, you will say, What has all this to do with our story?
Nothing—we admit it frankly—nothing whatever in a direct way; nevertheless, indirectly, the narrative may possibly arouse in you greater interest in the mine down which we are about to conduct you—not by the same route as that taken by the Prince and Princess (for the Boscawen Shaft did not exist at the period of our tale), but by one much more difficult and dangerous, as you shall see.
Before we go, however, permit us to add to the offence of digression, by wandering still further out of our direct road. There are a few facts regarding Botallack and mining operations, without a knowledge of which you will be apt at times to misunderstand your position.
Let us suppose that a mine has been already opened; that a “lode”—that is, a vein of quartz with metal in it—has been discovered cropping out of the earth, and that it has been dug down upon from above, and dug in upon from the sea-cliffs. A shaft has been sunk—in other words, a hole excavated—let us say, two or three hundred yards inland, to a depth of some forty or fifty fathoms,—near the sea-level. This shaft is perhaps nine feet by six wide. The lode, being a layer of quartz, sometimes slopes one way, sometimes another, and is occasionally perpendicular. It also varies in its run or direction a little here and there, like a wildish horse, being sometimes met by other lodes, which, like bad companions, divert it from the straight course. Unlike bad companions, however, they increase its value at the point of meeting by thickening it. Whatever course the lode takes, the miner conscientiously follows suit. His shaft slopes much, little, or not at all, according to the “lie of the lode.”
It is an ancient truism that water must find its level. Owing to this law, much water accumulates in the shaft, obliging the miner to erect an engine-house and provide a powerful pumping-engine with all its gear, at immense cost, to keep the works dry as he proceeds. He then goes to the shore, and there, in the face of the perpendicular cliff, a little above the sea-level, he cuts a horizontal tunnel about six feet high by three broad, and continues to chisel and blast away the solid rock until he “drives” his tunnel a quarter of a mile inland, which he will do at a rate varying from two to six feet per week, according to the hardness of the rock, until he reaches the shaft and thus provides an easy and inexpensive passage for the water without pumping. This tunnel or level he calls the “Adit level.” But his pumping-engine is by no means rendered useless, for it has much to do in hauling ore to the surface, etcetera. In process of time, the miner works away all the lode down to the sea-level, and must sink the shaft deeper—perhaps ten or twenty fathoms—where new levels are driven horizontally “on the lode,” and water accumulates which must be pumped up to the Adit level, whence it escapes to the sea.
Thus down, down, he goes, sinking his shaft and driving his levels on—that is, always following the lode ad infinitum. Of course he must stop before reaching the other side of the world! At the present time Botallack has progressed in that direction to a depth of 245 fathoms. To those who find a difficulty in realising what depth that really
The packmen are so styled because of their visits being paid fortnightly.