Final answer:
The demining device flare is a small explosive device used to destroy land mines by burning a hole in the mine's case and burning away the explosive contents.
Step-by-step explanation:
In the context of land mines, the demining device flare is a type of small explosive device that is used to sink the mine by blowing or opening a hole in the mine's case. It does this by using a battery-triggered electric match to ignite solid rocket fuel, which burns a hole in the mine's case and burns away the explosive contents, making the mine safe to disarm.
It's important to note that the demining device flare is a specialized device used specifically for demining operations and should only be handled by trained professionals in order to ensure safety.