You are viewing a single comment's thread.

view the rest of the comments →

0
0

[–] techieguyjames ago 

Thank you.

Is the filling done from both ends? Or is that expense/labor just ours?

0
0

[–] NACHTJAGD ago 

Yes, as part of an agreement with Mexico. A vibration cable is placed into the tunnel as well as a copper wire that will act as a sensor when ground pen radar goes over it to see if the concrete is still intact. They will pump in very watery concrete from the US side with just Mexican officials watching their side to not let it overflow. The vibration wire is pulled back to the US side as the tunnel is filled to get rid of air pockets. The copper wire remains. Usual a few wheelbarrels are needed on the Mexican side to fill in the vertical shaft.

0
0

[–] techieguyjames ago 

What is the reason for the copper wire?

0
0

[–] NOT_TALLEST_SKIL ago 

I dont know but I do know they pump em full