The Marianna Coal Mine in Pennsylvania exploded and killed 154 men.
Source
Women voted in a general election for the first time in New Zealand.
A Virgin Airlines plane became the first to fly using 100% sustainable jet fuel.
England and France formally recognized Hawaii's independence.
NASA launched the Mariner 4 space probe on a mission to Mars.
The US SM-65 Atlas missile completed the first successful intercontinental ballistic missile launch.
