"You'll find out in a moment, go find the two captives first, let them take them to the mine, I'll wait outside, you'd better stay away." Hong Tao seemed to be very jealous of these two small paper tubes, so he gently picked them up and put them on the windowsill outside the door, threw down two sentences and trotted away.

Gao Yu and this master and father's colt have also been mixed for several years, and when they saw such a scene, they immediately put away their contempt, there are really not many things that can make the teacher afraid, the teacher is afraid, and he must be even more useless as a student. So he was not ambiguous, called two prisoners of war with medicine cartridges, and he also approached the master a hundred meters away, and followed suit.

Jinshan is a hill more than 200 meters high, and the coal mine is at the foot of the mountain, which was mined on a small scale during the reign of the Tangut people, and now two more mines have been added.

After Hong Tao went, he chatted with the head of the craftsman here, found a waste hole that could no longer dig a vein, and asked the prisoners of war to dig a cannon hole and put a cartridge in it, and used a twist to draw out the ignition wire.

"Wait, put this away first, don't hold it in your hand. I haven't even tested how sensitive this thing is, so if it falls on a rock, it will be troublesome. ”

Before the ignition, Hong Tao made another arrangement, in addition to dispersing the personnel as far away as possible, he also strongly requested that another paper tube be placed further away to avoid being endangered by the explosion and flying stones.

"Knock...... ......The twist of the medicine disappeared into the cave in a cloud of smoke, and a moment later there was a muffled sound, followed by a puff of smoke and dust from the hole. Before the momentum of the forward rush weakened, a puff of smoke and dust rose again, and the mouth of the abandoned mine was blown down.

"It doesn't seem to be very powerful...... At this time, Hong Tao's courage grew, and he was the first to stand up from behind the bunker, looking at the smoke and dust in the distance with a little disappointment.

The cartridge was not filled with black powder, but a new type of explosives that he had created with his high school chemistry knowledge and was injured and destroyed. Originally, I expected it to live up to its expectations and show the great power it deserves, but in terms of effect, that's what happened.

"Big, big, big, this thing has to be distributed to the mine...... The villain promises to double the amount of coal produced! No, no, no, three times! Thrice! Before Hong Tao could think about how to test the second tube of medicine, the trembling chatter of the mine supervisor sounded behind him.

"You think it works?" Hong Tao was a little displeased, just by virtue of this performance, it seemed that it was not much stronger than black powder, and the mine supervisor was obviously patting his own ass. This trend is very bad, and the original simple craftsmen have begun to learn this stinky problem.

"It's easy to use, it's so easy to use, one tube top five tubes! No, no, at least ten tubes! "The mine supervisor really didn't see whether Lord Shuai Si was happy or unhappy, anyway, he was very happy.

"Find another mine and try it with the original cartridge!" Hong Tao wanted to criticize him, but he felt that this mine supervisor was not like a flatterer, and he couldn't get angry casually, so let's just compare it.

Compared to the last explosion, the power of the second arm-thick black powder cartridge was really a bit weak. Not only did it not blow up the hole, it didn't even blow up much of the rubble, it just added a crack to the stone wall.

"Find someone to dig two cannon holes of the same depth on the stone wall a hundred paces apart, and the officer should see the gap between them with his own eyes." At this time, Hong Tao still couldn't fully believe in the power of the new explosives, and wanted to measure it more intuitively and fairly.

The results of this test are very obvious, the cartridge on the left is black powder, and the charge is several times that of the new cartridge, but the explosion effect is not so ideal, the hard stone wall is only blown open a small cone-shaped hole, and part of the rock is shed on the surface.

In the words of the mine superintendent, if you want to completely smash this rock wall, you have to have 100 cartridges, and you have to carefully calculate the location of the detonation to make it possible.

On the right is a new type of cartridge, whose explosive power is many times more visible to the naked eye. A large hole was directly blown open on the stone wall, and the flying gravel flew out for a hundred and ten meters.

The mine supervisor roughly calculated the power of this explosion, and estimated that there were ten or eight more cartridges, and the stone wall would not shatter, but it would collapse completely.

"What is this, sir?" After listening to the words of the mine supervisor, Hong Tao finally had a smile on his face, and after a few words of encouragement, he returned to the small courtyard of the laboratory with Gao Yu.

"This thing is not a thing, it hurts that the official has not been close to a woman for two months, and his conscience is greatly damaged! If you rest for a few days, the official will also rest and rest, and then talk about it in a few days! ”

At this time, Hong Tao was like having no bones, looking at how awkward this yard looked, he threw down a sentence, and ran away without looking back.

Hong Tao ran away, but he choked Gao Yu in a hurry. A person is busy in the laboratory, planning to rely on the remaining test raw materials of the husband to restore the previous test results.

It's a pity that Hong Tao is a thief, the useful things are not put on the experimental table, Gao Yu tossed the bullshit for two days and didn't get it, if it weren't for Wang Da who listened to Mrs. Lian's physiology class and went into the house to pull people away by his ears, it is estimated that he would have to toss for a few more days, until the teacher who lacked virtue came back.

"Half of the credit for this thing has to be credited to you, if there is no ammonium sulfate, this official can't make a more powerful cartridge, do you want to learn?" Five days later, Hong Tao finally recovered his original spirit with the help of Lian'er, and then he remembered Gao Yu and came to the laboratory again.

"Students want to learn ......" Wang Da has already left, this woman is indeed strong, according to Mrs. Lian's professor and Gao Yu made up for the wedding night, only one day later, she went to Suzhou again, leaving Gao Yu as a groom to continue to mess around in the laboratory.

"If you want to learn, right, then talk to the officials, Wang Daken refuses to let you be pressed under him?" The teacher who didn't have a child would probably not ask the student this kind of question, but Hong Tao was stunned to ask.

"......" Gao Yu is already desperate, what kind of sin has he done to have such a gentleman and marry such a daughter-in-law!

"Hahaha, it's just a joke, don't be serious, how can the teacher be so rude. Now I'm laughing and laughing, I'm having fun, and I'm going to start class! ”

Seeing Gao Yu's embarrassment, Hong Tao was finally happy. He really didn't want to ask about the students' private lives, he just wanted to see how others were unlucky, so that he would be in a better mood, and it would be much easier to do those bloody experiments.

Speaking of playing with life, it is indeed quite dangerous, Hong Tao dissolved ammonium sulfate and potassium nitrate in water and heated them together to make them metacompose. When the temperature and concentration are right, a crystal that is also white will be precipitated, which is ammonium nitrate.

Ammonium nitrate is also a nitrogen fertilizer, but it is much more violent than ammonium sulfate, very absorbent, and will release a lot of heat, which will explode when encountering heat, friction and impact.

This kind of thing Hong Tao saw in the countryside when he was a child, and the people in his grandmother's hometown used it to mix it with sawdust and diesel fuel to fry fish in bottles, which was very fun.

After a few years older, there is no pure ammonium nitrate fertilizer in the countryside, and it is all replaced by calcium ammonium nitrate. That thing is much less absorbent, it won't be fried, and it's safe to use and transport, but it can't be fried casually.

In fact, ammonium nitrate is one of the later collectively referred to as ammonium nitrate explosives, which can be made into industrial explosives with different properties through the ratio of different materials. For example, ammonium oil, ammonium pine wax, ammonium ladder, etc., are commonly used products in engineering and mining.

It has the advantage of being relatively safe, less sensitive than other explosives, not passivating at all, and more stable after adding rosin, paraffin, diesel and sawdust.

The reason why the cartridge made by Hong Tao was directly detonated without a medicine twist, and a black powder stick was also installed in it, because the heat of the medicine twist could not be detonated at all, and it had to rely on the high temperature and high pressure when the black powder was detonated as a medium.

Then why is he so scared, because he doesn't know what the purity of the ammonium nitrate he gets, and if there are other impurities in it, maybe the sensitivity will increase. If this thing blew up, it wouldn't look like black powder, and you wouldn't be able to find anyone.

But its shortcomings are also obvious, that is, it is extremely afraid of water, and it will freeze after being wet, which is difficult to detonate again, and it is very inconvenient to store. Therefore, this explosive will basically not be used to load shells and grenades, so the mute rate will be very high, and it will also greatly increase the cost of logistics storage.