Coal seam fires in China generate as much CO2 as all of the light duty trucks running around the US.
I’m not sure about the world distribution of the production of metallurgical coal.
The stats you seek regarding metallurgical coal are on page 10.
https://www.worldcoal.org/sites/default/files/resources_files/coal_steel_report%2803_06_2009%29.pdf
And here’s where you find it.
https://www.mining-technology.com/features/feature-the-worlds-biggest-coal-reserves-by-country/
Source concerning the coal seam fires, please?
As for coal, met coal production seems to hold steady — it’s the thermal coal market that’s hosed.