Before revision: History Although some deep mining took place as early as the late Tudor period (in the North East , and along the Firth of Forth coast ) deep shaft mining in Britain began to develop extensively in the late 18th century, with rapid expansion throughout the 19th century and early 20th century when the industry peaked.
After revision: History Although some deep mining took place as early as the late Tudor period (in North-East EnglandMiningin Scotland , and along the Firth of Forth coast ) deep shaft mining in Britain began to develop extensively in the late 18th century, with rapid expansion throughout the 19th century and early 20th century when the industry peaked.