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Broadcroft Quarry
Broadcroft Quarry is an active stone quarry and part butterfly nature reserve located on the Isle of Portland, Dorset, England. It is located towards the eastern side of the island, where it lies to the east of the village Easton and close to The Grove village. The reserve section is now a valued home for a number of butterfly species, while the working quarry area is one of the largest active quarries on Portland and has supplied London with natural Portland stone for many years. The quarry is owned by Portland Stone Firms Ltd, along with Perryfield and Coombefield Quarries. The firm is the largest landholder on the island.
King Barrow Quarry, located close to the area of New Ground, in the north-east corner area of Tophill, is also another Portland nature reserve. Perryfield Quarry is also a part butterfly reserve.〔http://butterfly-conservation.org/2401-1948/perryfields-quarry-portland-dorset.html〕 Broadcroft links with the now-redundant Yeolands Quarry, to the east, situated on the far eastern side of Portland.
==History==
Originally, Broadcroft Quarry had been worked for many years since the beginning of the 20th century in the form of a number of smaller individual family run quarries which eventually merged to form a large quarry. In the past quarrying for aggregate was undertaken below the dimension stone beds down to the Portland clay, where Broadcroft was the only area on Portland where the full stratigraphical column could be viewed.〔http://www.stonefirms.com/portland-stone-range/portland-stone-quarry/〕
Planning consent for modern day quarrying on Portland was granted in 1951, covering 324 hectares of the island. Portland Stone Firms Ltd received and still holds the planning consent for Coombefield, Perryfield and Broadcroft. In recent times, expansion into the north western area of Broadcroft is taking place to meet the rolling contract for Commonwealth War Graves Commission amongst other projects.〔 The quarry has over 20 years of reserves left, which is privately owned by the stone firm, and as such is still being actively quarried. It is largely quarried for Broadcroft Whitbed stone.〔http://www.stonefirms.com/portland-stone-range/broadcroft-whitbed/〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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