The article says that two one-mile lengths will be constructed and that now they have completed more than 6 football fields (say 600 meters). That is not quite

The article says that two one-mile lengths will be constructed and that now they have completed more than 6 football fields (say 600 meters). That is not quite 20% of two miles, so the math may be more leading edge than the shovel. The article also says that the equipment has been underground "for months," so it doesn't get me thinking that tunnels are ready to conquer widespread problems on a large scale soon.