As far as I know that's pretty much exactly the amount of fissile material used annually world-wide.
The caveat is of course that for 1 kg of coal you have to dig up a lot less material than you have to for 1 kg of fissile material - U235 is around 1 % of natural Uranium, and Uranium is around 1 % of the ore.
I don't think you realise the VAST amount of energy density in one 1kg of coal vs 1 kg nuclear fuel. "Somewhat" is not nearly the correct comparison !
"8 kWh of heat (energy) from 1kg of coal vs 24,000,000 kWh from 1 kg of uranium-235" [0]
[0] https://www.euronuclear.org/glossary/fuel-comparison/