A black hole is supposed to suck in everything by nature. Micro black holes are theorized to "fizz out", so for example if one was on Earth it would not grow until Earth was consumed. It would seem then that there is a theoretical limit to the amount of matter that a black hole could consume.
Therefore, theoretically, you could have a black hole which was just big enough for your usage but not big enough to "eat" the whole facility or even the planet.
Of course, even the existence of black holes is still purely theoretical, but suppose you needed to experiment on one or use it as a disposal facility, could it be possible to control it or contain it?
Imagine the benefits of having a permanent waste disposal. Let physics itself condense waste into the smallest possible form through the utilization of a black hole. The only problem is: could it be contained?
A black hole would of course fundamentally require a controlled environment in order to have any practicality. However, being so strong that it even suck in light, I wonder if there is any possible way to even contain the black hole in order to utilize it. Of course, moving it is a completely different topic and I won't ask that here.
Can a black hole be contained within a facility in a controlled environment?