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Chalk mine near Scotia, Nebraska Open pit chalk quarry near Quidhampton, England. Chalk mining is the extraction of chalk from underground and above ground deposits by mining. [1] Mined chalk is used mostly to make cement and bricks. Chalk mining was widespread in Britain in the 19th century because of the large amount of construction underway ...
Footholds were cut into the sides of the shaft to allow people to climb in and out. The shaft, when the chalk is reached, widens out into a domed chamber with a roof of chalk some 3 feet thick. The walls frequently contract somewhat as they near the floor. As a rule the main chamber is 16 to 18 feet in height, beneath each shaft.
Blue Bell Hill is a chalk hill between Maidstone and Rochester in the English county of Kent. It overlooks the River Medway and is part of the North Downs. Settlements on the hill include the Walderslade suburb of Chatham and the villages of Blue Bell Hill and Kit's Coty. During the eighteenth and nineteenth centuries much of the hill was ...
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Thunderbird Archaeological District and Jasper quarry, near Limeton, Virginia, is an archaeological district described as consisting of "three sites—Thunderbird Site, the Fifty Site, and the Fifty Bog. It is located in Warren County Virginia, near modern-day Front Royal, in the Shenandoah River Valley.
The site is located about 3.2 km northeast of Stonehenge and evidence suggests the pits date back to the same period, some 4,500 years ago. 'Astonishing' giant circle of pits found near Stonehenge ...
During excavations conducted in 2018 and an analysis of archival fieldwork, researchers identified an estimated 115 to 200 pits. Most were rectangular in shape with dimensions around 7 feet in ...
The Fort Ancient earthworks were built in at least three stages over an estimated 400-year period. The shoulder blades of deer, split elk antlers, clam shell hoes, and digging sticks were used to loosen the dirt, and baskets holding 35 to 40 pounds were used to carry and distribute the soils in building the earthworks.