The Young Engineers in Mexico Part 10

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"Yes, Senor Tomaso."

"I would like to ask you what the problems are that we are to consider," Tom announced.

"Did you not see some of the problems before you, while we were going through the mine?" inquired Montez.

"At the risk, Don Luis, of appearing stupid, I must confess that I did not."

"Ah, well, then we shall come to the problems presently. You have other questions. Ask some of them."

For a moment or two Reade studied what he had written on the various envelopes before him. Then he picked out two.

"Here, Don Luis," the young chief engineer went on, "are samples of two lots of ore. The first is from the pile that we found pried loose when we went into the first tunnel that we visited. It is rich ore."

"It is good enough ore," Montez replied, with a polite shrug of the shoulders.

"Now, from the second tunnel that we entered, and where we also found a pile of loose ore, here is another sample. It is as rich as the first sample."

"Certainly, Senor Tomaso."

"But in this second tunnel I had a drilling made and a blast fired.

Here," picking up a third envelope and emptying it, "is a sample of the ore that we saw taken from that blast. If this sample contains any gold or silver the quant.i.ty is so small, evidently, as to render this kind of ore worthless."

"Yes?" murmured Don Luis, softly. "What is it that you have to say?"

"Why, sir, how does it happen that, right on top of such extra-fine ore we run upon blank rock at the very next blasting."

"That sometimes happens in _El Sombrero_," Don Luis replied, smoothly,

"How often has it happened?" asked Tom, looking up from the table and glancing keenly at Don Luis.

Dr. Tisco, though he appeared to be almost asleep, stirred uneasily.

"How often has it happened?" repeated Don Luis. "Oh, perhaps a dozen times in a few months, taking all the tunnels together."

"How long have these streaks of blank rock been?" insisted Tom Reade, while Harry wondered at what his chum was driving.

"How long?" echoed Montez, with a shrug of his shoulders. "Oh, how should I know? Personally I am not interested in such things."

"But have you gone as much as a whole week drilling and blasting through blank rock?" Tom pressed.

"A week? No; not for two days. Of that I am certain. But why do you ask all this, Senor Tomaso?"

"In order that I may better understand the nature of the mine,"

Reade responded. "I want to know what the chances are, as based on the record of the mine to date. Of course, Don Luis, you know what it means, often, when pay ore fails to come out of a streak, and a solid wall of blank rock is encountered."

By "blank rock" Tom meant rock that did not contain a promising or paying amount of metal in the ore.

"What it means?" Montez asked. "No; I can't say that I do."

"The wall of blank rock, found at the end of a vein of gold, Don Luis, often, if not usually, means that the vein has run out, and that it is useless to dig further."

"I did not know that," murmured the Mexican, in a tone of merely polite astonishment. "Then you believe that _El Sombrero_ will not turn out much more profitable ore?"

"I didn't say that," Tom continued. "But I will admit that finding the wall of blank rock ahead made me a bit nervous. Some great mines have been started, Don Luis, as you must be aware. For a few weeks they have panned out ore of the highest value. Much capital has been put into such mines, and for a time men have thought they owned a new Golconda. Then--suddenly--the blank wall, and no more gold has ever come out of that mine. In other words, it was but a pocket of rich gold that had been struck, and nothing more. Hundreds of men have ruined themselves by investing in such mines."

"I see," murmured Don Luis, thoughtfully.

"You did not know this before?" Tom asked, in some amazement.

"No, Senor Tomaso. I have been a good business man, I suppose, for I have prospered; and much of my money has been made in mining.

Yet I have never had the a.s.surance to consider myself a practical mining man. Dr. Tisco, here, is--"

"An ignoramus on the subject of mining," declared the secretary, who appeared just then to wake up.

"Carlos is modest," laughed Don Luis. "True, he is not a skilled mining man, yet he knows so much on the subject that, compared with him, I am an ignoramus. But that is what you are here for, you two. You are the experts. Investigate, and then instruct us."

"Have you any record of the number of times that you have encountered the blank rock, and the number of feet in thickness of the wall in each case?" Tom asked.

"Oh, no."

"That is unfortunate," said Reade, thoughtfully. "Hereafter we will keep such a record carefully. Don Luis, I will admit that I am perplexed and worried over this blank rock problem. I know Hazelton is, too."

"Yes, it is very strange," agreed Harry, looking up. Truth to tell, he had hardly been following the talk at all. Harry Hazelton was quite content to be caught napping whenever Tom Reade had his eyes open.

"Now, I would like to go back to the mine and stay there until some time in the night," Tom proposed. "I would like to take Hazelton with me. Soon we will arrange it, if necessary, so that Harry and I shall divide the time at the mine. Whenever, in any of the tunnels, blank rock is struck, whichever one of us is in charge will stay by the blank rock blasting, keeping careful record, until pay ore is struck again."

"You two young engineers are too infernally methodical," grumbled Dr. Tisco under his breath."

"That is a very excellent plan," smiled Montez, amiably. "We will put some such plan into operation as soon as we are fairly under way. But not to-day."

"I would like to start at once," Tom insisted.

"Not to-day," once more replied Don Luis, though without losing patience. "Yet, if you are anxious to know how the blank rock is coming I can telephone the mine and get all the information within five minutes. That will be an excellent idea. I will do it now, in fact."

Crossing the room, Don Luis rang and called for the mine.

"Our young engineers are very sharp--especially Senor Reade,"

murmured Dr. Tisco to himself, while the telephone conversation was going on in Spanish. "Yet I wonder if our young engineer does not half suspect that Don Luis has no man at the other end of the wire?"

Tom did not suspect the telephone trick. In fact, the young chief engineer had as yet no deep suspicion that Don Luis was a rogue at heart.

"The report is excellent," called Don Luis, gayly, as he came back. "In that tunnel where we saw the blasting done the blank rock has been penetrated, and the rich ore is coming again."

"How I'd like to see it!" Tom glowed.

"Why?" asked Don Luis, quickly.

"Because I am anxious to know all the secrets, all the indications, of fine old _El Sombrero_."

The Young Engineers in Mexico Part 10

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The Young Engineers in Mexico Part 10 summary

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