The Byford Dolphin Incident: How do you get sucked into something so strongly by a change of air from 9 atmospheres of pressure to 1?

Question

Please somebody know what I’m talking about. If not, then please see the diving bell incident in the link provided below. I just don’t see how you are killed by air.

https://en.m.wikipedia.org/wiki/Byford_Dolphin

In: Physics

Answer 1

Well one atmosphere of pressure is equal to 14.69 pounds per square inch. (Nice)

So 9 atm would be 132 pounds per square inch. Average person has a surface area of around 3,000 square inches. So that’s nearly 400,00 pounds of force

So…what part of a force equal to the weight of several fully loaded semis doing damage to a person is confusing?