Excavator

The Excavator is a Production building in Surviving Mars.

Description
Using advanced extraction technology, allows for production of Concrete directly from the Martian soil without the requirement for a deposit.

Note that in order to power the excavator, you need to run a power line to the "furnace" end as that seems to be the only place it will connect.

Strategy
Make sure to rotate the thing into the right position before placing it. Only the round annex shown on the right has connections for electricity, and that's also where the goods appear.