Do you think that there are 300 tons of metal that you sell on the exchange at an expensive price? No, this metal does not exist!

From the series of publications 
"So they create a fairy tales for the investor" - 
"They draw up the necessary documents
and begin to search for the simpleton..."

How to create a fairy tale for an investor?
Imagine a mineral deposit from which 100 tons of metal concentrate are extracted.
They extract metal in the following sequence: the mine, the processing plant.

The mine: In fact, the mine produced 15000 tons of ore with a metal content of 0.66 %.

The processing plant: In fact, the processing plant processed 15000 tons of ore and produced 300 tons of THE METAL CONCENTRATE.

In this case, "THE METAL CONCENTRATE" a semi-product that cannot be sold on the exchange. 
Metal concentrate is is 300 tons of particles of mineral but not metal ingots. The metal content in the concentrate is 33 %. The particle size of the mineral 44 microns. 
It can be sold at a cheap price. Theoretically, the buyer can get 100 tons of metal from 300 tons of concentrate at his metallurgical plant.

They remove the word "THE CONCENTRATE" from their reports and report: "The processing plant produced 300 tons of THE METAL."

 In such a cunning way, they made 300 tons of metal instead of 100 theoretically possible.  

 Do you think that there are 300 tons of metal that you sell on the exchange at an expensive price?

No, this metal does not exist!

This is fairy tale for the investor!

IMHO: This is one of the reasons why the recovery is 115-250 % in plants.
P.S. Based on real events.

 Ph.D. Natalia Petrovskaya

  You can read more  The difference between ORE and METAL exists!