Does anyone know where in the United States most Italian immigrants from Calabria settled besides NYC?

I know a lot wound up and settled in PA both in the NE and in Western PA around PGH, and in nearby WV and OH; but what attracted them to the areas, what sort of work did they do, and what made them stay there instead of going to a large city like PGH/PHL or NYC?

Was it the factories/industry, coal mining, or something else?