ro.wikipedia.org/wiki/Proiectil Un * proiectil* este orice obiect care este aruncat prin exercitarea* forței mecanice*

Eng Wiki, pneumatic rifles use **compressed gases*** (petroeum tanque overpressurised, overheated), while most other guns and cannons utilize** expanding gases ***liberated by sudden chemical reactions by propellants like smokeless powder. Light-gas guns use a combination of these mechanisms.


Common projectile at gas plant, refinery is guages EXPLODING GUAGES, PIPES, VALVES, VALVE SEALS, din not find an example.

The Projectile in my idea is not the debris, it is debris of EXPODING part of refinery.

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Note added at 6 hrs (2023-10-07 22:57:14 GMT)
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links https://ro.wikipedia.org/wiki/Proiectil
https://en.wikipedia.org/wiki/Projectile

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Note added at 6 hrs (2023-10-07 23:07:12 GMT)
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https://www.attorneystevelee.com/our-library/refinery-plant-...

Industrial Explosion Injuries
Many chemical plant and refinery explosions lead to serious injuries and even death. Some of the most common injuries caused by industrial explosions include:

Burns. The extreme heat and chemical reactions typical of plant explosions can lead to severe burns. These painful injuries may result in long-lasting scarring and disfigurement.
Lacerations. Falling and ***exploding debris***can cause serious and painful cuts, resulting in permanent scarring.

(would say Projectiles are Exploding debris hope i have not said too much, sorry. , depends on surrounding text)