The law makes no special mandate. In 1789, Justice James Wilson was sworn in by the mayor of Philadelphia, Pennsylvania, where the court first sat. Thurgood Marshall, the nation's first African-American justice, took the Constitutional Oath in 1967 from Associate Justice Hugo Black, an Alabaman.
ballast - A device required by electric-discharge light sources such as fluorescent or HID lamps to regulate voltage and current supplied to the lamp during start and throughout operation.
How many tons of ballast to a meter cube of concrete. For foundation concrete, 1 cubic metre is equal to 1.76 tonnes ballast, and for general purpose concrete, 1 cubic metre is equal to 1.6 tonnes ballast. report this answer.