A specialised drilling machine is dropped into the bore hole, and this then tunnels its way across to the second bore hole.
Instead of using pneumatic machinery, trenchless pipe boring machines use hydraulic power instead.
McLaughlin Vacuum Excavators Helping to Clean Gulf of Mexico Oil Spill
Vacuum excavators are emerging as one of many tools helping with the Gulf of Mexico oil spill cleanup efforts. However, they are only one part of the solution.
http://sanfrancisco-plumber.com/
