Mines not producing

[Rx22]

I have 2 deep and 2 sparkling for two days they are providing only stone, coin and occasionally ore. No coal so I am buying rocks and spending additional energy to harvest coal. Any one else experiencing this issue?

Thanks

[ShibuyaCloth]

Did not really focus because I don't use mines for coal. my preferred source are Flyger Cubs as they yield much more. But of course not every one have those. I get silver and Elvenite.

[[S8] HungryGoblin]

Coal can be somewhat rare and may take multiple attempts from Deep and Sparkling Mines. Please check out the Inventory Guide here (https://forums.storm8.com/showthread.php?76375-Castle-Story-Inventory-Guide&p=1025263&viewfull=1#post1025263) for additional options for collecting Coal. Hope that helps.