I decided when i upgraded one of my explorers to give him rarity search ability..now can someone explain to me how iron ore and coal are rare???? I get that 9 out of 10 times. I have gotten beans twice and guild coins 3 times the rest is every day things i make a ton of. I would like Ubi to fix this please. Even Granite and titan ore and exotic planks are rarer than coal and iron!!