# Gas Injection Process
Injecting and intermixing an **Non-Combustible Gas** (D) (non-burnable gas) with the '**Burnable** **Gas-Mixture** (B) "changes" or "alters" the gas-mixture "**Burn-Rate**".
Increasing the volume-amount of **Non-Combustible Gas** (D) diminishes and/or lowers the "**Burn-Rate**" of the **Gas-Mixture** (B/D) still further.
[](https://stanslegacy.com/uploads/images/gallery/2023-12/Mw6PFaxapv0ewddx-image-1702961644787-54-02.png)Progressive and controlled intermixing of the non-combustible gases (B/D) allowed the "Burn-Rate" of Hydrogen to be "lowered" or "adjusted" to "match" or ... co-equal the "Burn-Rate" of other **Fuel-Gases**, see curve line in Figure (2-2).
In terms of operational performance, the **Non-Burnable** gas (D) does "Not" support the **Combustion Process** since the **Non-Burnable Gas** (D) "restricts" or "retards" the speed at which the **Oxygen Atom** unites with **Hydrogen Atoms** to cause **Gas Combustion**.
The "**Gas Retarding Process**" is, of course, applicable to any type or combination of **Burnable Gases** or **Burnable gas-mixture**.