# Bomb in concrete

**URL:** <https://boards.straightdope.com/t/bomb-in-concrete/460126>\
**Category:** Factual Questions\
**Created:** [August 15, 2008, 7:00pm UTC](https://boards.straightdope.com/t/bomb-in-concrete/460126 "2008-08-15T19:00:11Z")\
**Posts on this page:** 1\
**Page:** 2

<div class="post-metadata">

**Author:** ![astro](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@astro](https://boards.straightdope.com/u/astro)\
**Post date:** [August 17, 2008, 10:18pm UTC](https://boards.straightdope.com/t/bomb-in-concrete/460126/21 "2008-08-17T22:18:27Z")

</div>

Rock is not a good pressure vessel and a grenade is an infinitesimal level of energy compared to other geophysical forces that might sustain a high pressure level in a rock cavity. I seriously doubt even an atomic explosion would create a sealed overpressure scenario except for a brief time. The likelihood of an underground high pressure “pocket” being maintained over time by conventional or nuclear explosives is practically nil.

[Previous page](https://boards.straightdope.com/t/bomb-in-concrete/460126.md?page=1)