Based from all the previous comments here on my blog and private messages that I received from FaceBook, one of the major concerns by many are all about the hidden Yamashita treasures inside “Japanese concrete vaults”. For those who does not know, the JIA (Japanese Imperial Army) didn’t just dug a hole with a certain depth, placed the treasure and then covered it back.
It isn’t that kind of simple. The JIA won’t just let anyone take their war loot with so much ease where they had cleverly setup deadly traps and blockages that are very hard to penetrate. Vaults is one among these annoying obstacles.
What is a Japanese concrete vault?
Concrete vaults made by the JIA during the WW2 has only one purpose but to store something valuable inside them particularly the Yamashita treasure. Unlike any other commercial concretes that we use today, the JIA used a special type of concrete known as the “Japanese Grade II Bunker Cement”. This special cement is intended to be used for building bunkers the reason why it is so hard to break by just using ordinary tools.
As a treasure hunter myself, I already encountered several concrete vaults and I have to say that not all of them contains deposits. Some of them were just empty which was very disappointing – all because of the time and effort that simply went to waste. I already know some group of treasure hunters who permanently quit just because of this kind of terrible experience.
Japanese made concrete vaults back in WW2 can be encountered under the ground, underwater and on the surface.
Under the Ground
After going through all the effort of digging your way through the hidden item which include decoding the markers and dealing with dangerous traps, you may finally encounter the item. But in most cases, the items are stored inside a concrete vault.
Some amateurs who encounter concrete vault on their diggings do often have the common mistake of ignoring the object. What they usually do especially when they hit the top portion of the concrete vault is that they will dig to the side and continue going down.
One commonly asked question about concrete vaults encountered deep underground is whether to break it under or pull it out to the surface before breaking it. The answer to this question really depends on the situation but in my own personal opinion, it is always best to pull it out. If the object is quite impossible to be pulled out then you got no other choice but to break it on its original spot.
I do have one experience of an underwater treasure deposit stored inside a small size concrete vault measuring 30 inches (length) x 12 inches (width) x 15 inches (height). Although, we didn’t recovered it from the ocean or sea but from a creek.
It’s an old creek but the water that flows through it is almost comparable to a river. And, the portion where we found the vault has a depth of around 10 to 15 feet deep. Moreover, I will tell you more about it on a separate post since this discussion is all about concrete vaults.
If it happens that you discovered a concrete vault underwater then it is always best to pull it out. I really find it hard to imagine someone breaking such a very hard object while submerged under the water at the same time.
On the Surface
Some of the JIA were too clever to build concrete tombs. Since we Asians do have deep respect to the dead where we are taught not disturbed their resting place, it puts an end to our curiosity. But when it comes to those strange tombs built by the JIA, there is a huge chance of hidden treasures inside them.
Tombs are just one example of concrete vaults made by the JIA where they hid their treasures. Others include concrete posts, walls and many other concrete objects built by the JIA that can be found on strange places.
I have another experience that I would like to share. This was about a huge rock split into half. At the center, the JIA carved a hollow where they placed the items inside then they filled the empty spaces with their specialized cement and re-stuck the rock back to its original form. This was actually a very common tactic used by the JIA especially on places with a lot of huge rocks around.
Natural Rock or Concrete
One problem that I noticed to all new treasure hunters is that they do not know how to distinguish natural rock from concrete. The Japanese Grade II Bunker Cement will actually have a similar appearance to an ordinary rock as its age.
The most common method used by treasure hunters in trying to distinguish ordinary rock from a concrete is by using muriatic acid. If it’s concrete then there should be a chemical reaction where the surface easily get etched by the substance and it bubbles. On the other hand – where there is no reaction, it means that it is just an ordinary rock.
Ways of Breaking a Hard Concrete Cement
Lately, I was heavily promoting the use of the product known as “Dexpan” for breaking hard concretes. However, there is a problem in most countries who just recently started banning this product. I believe that this isn’t just the case for Dexpan but to any other similar products as well.
Before you start breaking hard concrete with suspected Yamashita treasure, it is always a wise decision to confirm it if it’s really positive or not. You have to know that not all concrete vault made by the JIA do contain precious items. Most of them are just plain empty. The worst part is the hassle of breaking it which isn’t really an easy thing to do and then only to find nothing inside.
The only working method that I know about how to confirm if there is a precious item inside a concrete vault is to use a metal detector. It must have a reliable discrimination feature that can discriminate ferrous from non-ferrous materials. If you do not have such equipment then perhaps you can rely on the concrete vault’s weight. So if it is heavy for its size then you should break it.
There are actually many effective products for breaking hard concrete that are available in the black market. This means, they are illegal products that are strictly prohibited by the authorities. If you got caught using such product then you could end up in jail. Thus, I won’t be endorsing any products from the black market here.
Anyway, if you want to stay on the safe side then you should use the old traditional method of using fire and water.