First off I want to apologize for yesterdays post. It was a bit to far out in left field so I will try again today to make a post that is a little more worthy of re-posting.This Photo here is My Father-in-Law operation a very cool Device, it is a dredge nozzle that allows dredging on the dry ground instead of in the water. It is called a Hydro-force Nozzle. It works great for cleaning the bedrock once you have reached it. It works just like a dredge nozzle except there is a little diverter valve so that you can fill your hole with water and initiate suction. Once you have a good suction going in the water then you adjust the little ball valve on the side so your getting a good mixture of water and gravel going through your hoses while supplying water to the hole to keep the nozzle in water. This proper mixture help reduce clogs. There are quite a few you-tube videos on the use of this device, and all you need to do is type in Hydro-force to see it in action. When My Father in law is operating this tool he will say he needs a break, and let one of us take over. Well his break consist of standing directly over whoever is running the Hydro-force until you feel guilty and give it back to him. Usually he only will take a 5 min break. He will operate that thing for a 10 hour day, exhausting work.