John Henry is an American folk hero. An African American freedman, he is said to have worked as a "steel-driving man"—a man tasked with hammering a steel drill into a rock to make holes for explosives to blast the rock in constructing a railroad tunnel. The story of John Henry is told in a classic blues folk. .
According to legend, John Henry's prowess as a steel driver was measured in a race against a , a race that he won. .
The historical accuracy of many of the aspects of the John Henry legend are subject to debate. According to researcher , the actual John Henry was born in. .
• – Strategy for coping with prolonged exposure to stress• – Soviet miner and national hero• – Giant lumberjack in American folklore .
The tale of John Henry has been used as a symbol in many cultural movements, including and the .
• at the (archived 13 October 2016)• •
[pdf] In the arctic circle alone, it's estimated that 13% of the entire world's oil reserves are trapped under the ocean floor. In terms of what's under the entire world's oceans, it's estimated that 84% of all non-renewa.
[pdf] A drilling rig is an integrated system that , such as oil or water wells, or holes for and other construction purposes, into the earth's subsurface. Drilling rigs can be massive structures housing equipment used to drill , , or natural gas extraction wells, or they can be small enough to be moved manually by one person and such are called . Drilling rigs can s.
[pdf] 
