Coal will continue to drop.
Natural gas will likely flatline or grow.
Oil won't drop because of renewables. What is more likely is that the price of oil will eventually drift higher, and this will cut back on some use. Given that about half of the oil is used for gasoline, replacing that with renewable energy won't be easy.
Read this and find out
https://www.lazard.com/perspective/levelized-cost-of-energy-analysis-100/
hahahaha
Coal mining jobs are gone, no matter what. Even if the US production of coal doubled, most of the coal would come from surface mining out west, which is heavily automated.
Plus, let's get real. There are somewhere around 90,000 coal mining jobs in the US now. That's somewhere around 0.05% of all jobs in the US. The idea that we should change energy policy to keep a few thousand jobs going is
stunningly irrational.