(April 2015) Corruption in Brazil exists on all levels of society from the top echelons of political power (as seen in the MensalÃ£o Scandal and the Operation Car Wash and the Petrobras scandals) to the smallest municipalities.
Quartz sands, which are high in silica content, are used to make glass. When quartz sands are crushed they produce particles with sharp, angular edges that are sometimes used to make sandpaper for smoothing wood. Some quartz sand is found in the form of sandstone.
I don't know of one beach that's especially good for sea glass. I find it all over the place. Mostly I search the beach to the west of the sandbar at low tide. Not many people walk that way so you can find more pieces. I usually don't find any on the sand bar itself. Sand Beach and Seal Cove Beach are good for sand dollars and some sea glass. Also, there is a large stretch of beach behind the Chart Room restaurant off of Rt 3 that is good for sea glass.