(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.
With the Dremel on at the lowest speed, carefully place the drill bit on the beach glass. Initially keeping the glass above the water will help the drill bit begin the hole. Once a small hole is started, you can add more pressure onto the glass and submerge the piece under the water. For thicker pieces use a good amount of pressure to drill about 3/4 of the way through the glass, then turn the glass over and drill from the other side.