Admins.

[Strom]

The other guy got a stricter punishment than you.
As in if he breaks a rule again he will likely be permed.
If you had read and knew the rules you wouldn't be in this situation.

There is nowhere in the rules that you can not make contrabands down in the labs.

And then i get banned for 4000 min.

Non-Government cannot build anywhere in the nexus unless they are working for the government under the presidents permission (For example a security guard)
The Lab is considered part of nexus as you have to go past the desk or through the garage to get to it, both these places are restricted to go into without permission from the President.