The Old Mining Site is the sixth zone of Ipsilon (and overall).
Objective[]
Roll the two iron ore balls to the insignia.
Strategy[]
Since the balls are heavy, it's easier to knock them off their perches and push them to the target than to try to use a crane to lift them off. This can be done with 
Cannons, 
Bombs, or a fast vehicle.
Often, just dislodging them will push them onto the target.
If you do it without pressing a button, you'll net the Rube Goldberg, Rolling Rocks achievement. 
Automation blocks are useful for this, but they're not the only way to do it.
Related achievements[]
Video[]
