Mining robots are what mine for you. They will mine day and night non-stop, and will mine as long as your batteries are running. Your mining robots can only mine three mine sat one time, and mine at 25bph (buckets per hour). This can be increased by moving to the city your mines are located in (giving a +5bph bonus to all mines in the city you move to), and by using equipment (which boosts your bph according to the color of the equipment your using. Equipment doesn't stack.
Your batteries are what run your mining robots, if they run out, your bots will stop mining and you'll stop finding things. Your batteries can be recharged simply by clicking the "findings" tab. At first, your maximum battery life is 16 hours, meaning your going to have to check at least once a day to keep them running. This time can be increased by getting more melds, which will increase your battery life by 1 hour per meld. You can also buy temporary battery extensions in the shop that will give you 10 days of battery life each. These are only temporary, but can be helpful if your going on vacation or will be away from a computer for a long period of time, allowing your mining robots to keep mining despite you not being there to recharge them. Each extension costs 9 credits.
Special mining robots
Special mining robots can be produced in a factory using ore, which will mine damaged items for you. While normal bots only find undamaged items, and consider damaged items useless dirt, these special bots can find damaged items too, which can be repaired in a factory for ore. Special mining robots come in different models, ranging for MR3 to MR30, with higher numbers finding more damaged items. The MR# is decided by the number of melds you have, so if you have 30 melds, you make MR3's, but if you have 0 melds, you'll make MR9's. Special mining robots require 5 ore and 7500 components to produce.