Mining related medals

Best coal miner of the year, issued in 1950 by Stalin. Accoring an antique dealer in St.Petersburg only a very limited number of these medals (3?) where issued by Stalin himself. I would like to have this story confirmed by anyone!

"Honorary miner" was a title first issued in 1947 for long and conscientious work

Miner's glory sign was first issued in 1956 and has three degrees.

Labour glory sign was instituted in 1989 and has also three degrees

Honorary worker of coal industry, was first issued in 1989.

Donbass medal. A famous medal issued around 50.000 times for the soldier that got the Donbass basin working again after the Great Patriotic War.