The Digital Miner in the Mekanism mod is one of the most useful machines in the game, but also one of the most expensive. This machine can scan for ores and mine and teleport them to the surface. You create the Digital Miner by combining two teleportation cores with atomic alloys, refined obsidian ingots, a control circuit, two logistical sorters and a Robit. Once you have the Digital Miner, set it up somewhere where you can power it. The green power plugs are where you can connect the power cables. Then connect a item  transporter to the back of the Miner and hook it up to a chest. Once the Digital Miner is powered you can set a filter by typing the dictionary name of the ore(s) you want to mine. You can get these names from the Dictionary, which is craftable with a book and control circuit.