I will contact the admin about this and see if it was a bug.  

Also I find it is better to upgrade vision, stamina, storage and supports (ladders and supports) so you can collect faster and deeper.


TIP: Upgrade your stamina, vision and supports and you will be able to mine all the way to the bottom and get the good stuff. Just start by the "hospital" and mine all the way to the bottom and build your ladders so you dob't fall more than 3 spaces or you can die. Once you hit the bottom, then start clearing the bottom levels and be careful not to get crushed by a gray block (use your space bar to place a "support" under the block so it does not fall and you can continue to clear that level and get your rewards.