The point at which the slight indentation had been made was nearly at the corner of the stone. This was gradually enlarged, by hammering upon it with the head of the axe and, after an hour's work, the surface had been so far pounded that the chisel could get a flat hold upon it. Then Stanley and one of the Burmans lay down, and placed the cutting end of the long ramrod against it; and the others, by turns, struck the end with the back of a light hatchet, those holding the rod turning it, slightly, after each blow. Every half hour the edge of the chisel was resharpened and, by the time the next party relieved them, a hole of half an inch in diameter, and two inches deep, had been drilled in the stone. Stanley remained with the newcomers for half an hour, instructing them in the work, and then went below.
"Well, Stanley, what are you going to do with this monstrous stone Meinik tells me of?"
"There is only one thing to do with it, Harry; that is, to blast it. The block is so inclined that one can do nothing with the chisels, and we are now drilling a hole. I don't know that I shall succeed but, at any rate, I am going to have a try. If it fails, I must hit on some other way. The provisions are holding out all right; and Meinik calculates that, with a little stinginess, we could manage for another three weeks. We have drilled the hole in two inches today and, as we get more accustomed to the work, I dare say we could do three inches in each shift. The block is twenty inches through on the straight, and may be two feet on the line that we follow; so that in four days we shall be nearly through it.
"In three weeks we shall have made five holes, which will weaken it so that we may be able to break it off. However, I hope we shall find one hole sufficient. I shall make it fifteen inches deep, and then charge it with the contents of a dozen cartridges. I think that ought to do it."
In two days and a half, the hole was of the required depth. Harry had progressed so rapidly that he was able, that morning, to walk across his room.
"We must try the shot, at once," Stanley said, "because if it fails, we must go on working. If it succeeds we can, if we like, wait for another week before we make off. By that time you will be strong enough to be got through that low passage, and walk for a little distance; when we can cut some poles, and rig up that hammock again.
"Do you know anything about mining, for I know nothing? I only had an idea how to drill the hole from seeing some engineers at work at Agra, years ago; but I am sure I don't know how they fired the shot, or prepared it."
"I can tell you a little about it, Stanley; for I have been down a coal mine once or twice, and watched the men doing it. They first of all put in the charge; then they put in a wooden rod, just the thickness of the fuse they use; then they dropped in a little dry dust round it, which they pressed down very carefully, with a small wooden rod; then they damped some dust, and hammered that down hard. After putting in about half an inch of this, they used dust slightly moistened, beating it down as before. When it was quite full, they pulled out the centre stick, and put the fuse into the hole that it left."
"We have not got any fuse," Stanley said, "but I think that if we take a narrow strip of cloth, moisten it, and rub gunpowder into it; let it dry, and then roll it up, it would be all right. Then we could lay a train of damp powder to it, set the end alight, and bolt."
"I should think that that would do," Harry agreed, "but you would have to bolt very sharp for, if it went off before you got to the bottom of the steps, it might be very awkward."