April 18th

On this day in 1962....

• The Commonwealth Immigrants Act in the United Kingdom received royal assent, removing free immigration from the citizens of member states of the Commonwealth of Nations, requiring proof of employment in the UK. The law would go into effect on July 1.
• What was described as a fireball (a brighter than usual meteoroid) exploded ten miles south of the town of Eureka, Utah at 8.15 pm local time. The burst of light was visible across the western United States, as far east as Kansas.
• The first underground ballistic missile base in the U.S. became operational, with the delivery of the first nine Titan I missiles, to silos at Lowry Air Force Base Colorado. By September 28, all 54 Titans would be activated at bases in five western U.S. states.