Some resources and objectives can only be obtained through mining.
To equip the Mining Tool use '2' on your keyboard.
The mining Tool can be used on Minable Nodes found across the map and mining sites.
Aim at the nodes and use the left mouse button to activate the mining tool. Your mined minerals should go directly to your inventory.
On some mining sites you can also loot the mining deposit depot by holding E to get more materials.
There are also cache panels that are bolted on to walls.
Aim the mining tool at the individual bolts to remove them.
Once all 4 bolts are removed you will be able to loot the container.