I have shown you some of the things going on with the horizontal boring process that has installed two 6" diameter plastic sewer lines under Shore Road. I have more to show you in the future. But meanwhile I wanted to show you some things that went on in order to safely allowing boring to take place. They used special magnetic sensors and records from the utility companies to determine where things like gas pipes and water pipes are under the street. Then they mark these symbols on the sidewalk and street so that when they are excavating, they don't risk damaging the utility pipes. In this case they are showing where a "Gas Main" is located, and the fact that it runs underneath another pipe. I just found these symbols fascinating, and thought of Egyptian hieroglyphs, even though they are actually quite differnent.
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