Last year, the House was in session for 118 days prior to Election Day and 135 days total. In total, Congress passed 65 laws, the fewest in history. With this almost non-existent work schedule, it appears that the record is not only in doubt but could be obliterated.
Rating Newest Oldest. Best Answer: Common glass contains about 70-72 weight % of silicon dioxide (SiO2). The major raw material is sand (or quartz sand) that contains almost 100% of crystalline silica in the form of quartz.
A core is made of clay mixed with sand, to which have been added organic materials such as straw, grass, leaves or seeds. This core is mounted on a metal rod, and the glassmaker wraps it in hot semi-molten glass drawn into a thread. The glassware thus produced is decorated by the addition of glass threads of different colors, which are formed into zigzags, as here, or into garlands. Once the glass is cool, the clay core is discarded.