Black holes in space are produced by supercompression of matter, with the compression mechanism being gravity. There isn't enough matter on Earth to produce enough gravity to make one that way.
But what about other means of supercompression?
What if per instance you made a bomb that used H bombs to supercompress elements that are too heavy to fuse and which would therefore not produce an explosion to resist the compresion? Could it create a black hole?
No sane person would do this, but is it possible?