I have no proper release yet, as I am still missing my textures / animations.
If you are inside the excavator and hover over some mineable material (the selection box has to be yellow) the excavator will start digging the ore and place it in its inventory.
It is also rather useful for killing alien bases

If anyone has more ideas of what you want to see in this mod, please tell me in a comment.
PS.: If there is anyone who is able to make textures for this mod, please contact me.