Indeed - the Center for Media and Democracy's wiki article on US coal mining has some interesting charts: http://www.sourcewatch.org/index.php/Coal_and_jobs_in

Indeed - the Center for Media and Democracy's wiki article on US coal mining has some interesting charts: http://www.sourcewatch.org/index.php/Coal_and_jobs_in_the_United_States#Coal_mining_jobs http://www.sourcewatch.org/index.php/Coal_and_jobs_in_the_Un... Starting in 1900, with 448,581 miners producing 268,684,000 short tons, the output's more or less risen steadily to almost four times that total amount, but the number employed in 2013 was 80,209, reflecting about 20x the productivity of 1900. As far as the point of employment goes, Wyoming claimed a relatively modest total of 6,673 mining (surface and underground) jobs in 2013.