Removing Sand from Post Hole

Customer is installing the border fence for the US Department of Homeland Security. They cannot use a posthole digger because they are in sand and the hole collapses. So they hammer drill the post in. Then they need to remove the sand from the interior of the pipe so they can fill it with concrete. This is to prevent intruders from sawing off the post. The Model 150200 2" (51mm) Heavy Duty Line Vac easily removed sand and small rocks. Being made of hardened alloy steel, it held up to the abrasion of the sand and rock.