Background Silicon is the second-most abundant element in the earth's crust, after oxygen. It binds to oxygen, forming crystalline or amorphous silica (silicon dioxide, SiO2), silicic acid (Si(OH)4), and silicates, such as quartz.Silicon is present in rocks, soil, sand, and dust as crystalline silica. Silicic acid is formed naturally from silica and is readily absorbed in the human gastrointestinal tract.void occupational (in the air) exposure to crystalline silica. Exposure may cause lung diseases, such as silicosis (silica in the lungs), tuberculosis, chronic bronchitis, chronic obstructive pulmonary disease (COPD), and lung cancer.
Getting Out of Jury Duty. 1  1. Prove economic hardship. 2  2. Request a change of date. 3  3. Request a date in December.  4. Try asking them to move the date up, not 1  back. 5. Use your student status as an excuse.  6. Consider using a risky loophole if you're in California.
ADDED: All you have to do to get out of jury duty is to go to the DMV, get a new driver's license with a new address on it (outside of the court's jurisdiction) and take it to the clerk of courts and tell them you are in the process of moving to that address and to send all future correspondence to that new address.