Inert drilling on landfill sites

摘要

A landfill barrel auger apparatus 4 includes hollow drill rods 5 and barrel auger 6 at the lower end. The interior of the barrel auger 4 is in communication with the interior of the drill rods 5. An inert supply of gas 1 is connected to the upper end of the drill rods 5 and inert gas can therefore be supplied to the interior space of the barrel drill auger 4. The barrel auger 4 may include a temporary window 7 with a removable patch 8 which can be removed as the barrel 4 fills with material and therefore prevents over pressure of the barrel 4.