The Krone Experiment (2005)

Plot hole: In the course of the story it's said that at the time the black hole went out of control, it had a mass of "half a mountaintop of granite." But in a flashback scene Dr. Krone is shown growing the mass of the hole by feeding it large numbers of lead bricks in the laboratory. It's a little hard to believe his lab could store, or even afford, enough lead bricks to equal that much mass.

Trivia: The scenes in Krone's laboratory were photographed around a real Tokamak machine, which soon afterward was disassembled & shipped to a Chinese university.