Silica Defined. Silica is another name for the chemical compound silicon dioxide. Each unit of silica includes one atom of silicon and two atoms of oxygen. If you have never heard of silica before, you might be surprised to hear that you probably come into contact with it every day.
The Fifth Circuit, for example, includes the states of Texas, Louisiana, and Mississippi. Cases from the district courts of those states are appealed to the United States Court of Appeals for the Fifth Circuit, which is headquartered in New Orleans, Louisiana.
There are 94 districts within twelve regional Circuits* in the federal Judicial Branch. Ninety are within the United States, proper (including the District of Columbia); the oâ¦ther four are in Puerto Rico and the US Territories of Guam, the Virgin Islands, and the Northern Marianna Islands.