Another successful Autostem project. Excavation of a 11′ x 17′ septic pit 6′ deep. Low vibrations, Drill load and shoot in 4 hours. Excavation of rock without the use of explosives. no vibrations at 100′ away. The low velocity deflagration enables easily controlled flyrock with 4′ of dirt cover. Safely shoot with cars parked 100′ away. Debris stayed within 25′ radius. You no longer need high explosives to accomplish our difficult rock excavation jobs. There is now an alternative, Autostem the solution to your rock excavation headaches.