(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.
The glass found at Glass Beach was mainly from broken bottles and auto glass dumped by Swiss Cheese Shoreline on the western end of Kauai. Glass Beach is best for beach combing only. Please don't take any of the glass, leave it for others like you to enjoy for many years.