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{{good article}}▼
{{Other uses|Copper Basin (disambiguation){{!}}Copper Basin}}▼
{{short description|Geological area in southeastern Tennessee, United States}}
▲{{Other uses|Copper Basin (disambiguation){{!}}Copper Basin}}
The '''Copper Basin''', also known as the '''Ducktown Basin''', is a [[geology|geological]] region located primarily in [[Polk County, Tennessee]] that contains deposits of [[copper]] ore and covers approximately 60,000 acres. Located in the southeastern corner of Tennessee, small portions of the basin extend into [[Fannin County, Georgia]] and [[Cherokee County, North Carolina]]. The basin is surrounded by the [[Cherokee National Forest]] and the cities of [[Ducktown, Tennessee|Ducktown]] and [[Copperhill, Tennessee]] and [[McCaysville, Georgia]] are located in the basin.▼
▲{{good article}}
{{Infobox sedimentary basin
| name = Copper Basin
| other_name = Ducktown Basin
| named_for = [[Copper]], [[Ducktown, Tennessee|Ducktown]]
| image = Ducktown train.jpg
| image_caption = Copper train in the basin (1939)
| image_size =
| image_alt =
| coordinates = {{coord|35.02|-84.36|type:landmark_region:US_dim:10000|display=inline,title}}
| region = [[Appalachia]]
| country = {{USA}}
| state = [[Tennessee]], [[North Carolina]], [[Georgia (U.S. state)|Georgia]]
| cities = [[Ducktown, Tennessee|Ducktown]] and [[Copperhill, Tennessee]] and [[McCaysville, Georgia]]
| onoffshore = Onshore
| boundaries = [[Pack Mountain]] (E), [[Stansbury Mountain]] (N), [[Little Frog Mountain]] (NW), [[Big Frog Mountain]] (SW)
| partof = [[Geology of the Appalachians#The Appalachian Basin|Appalachian Basin]]
| parts_type =
| seas =
| rivers = [[Ocoee River]]
| lakes =
| area = {{convert|60000|acre|km2|abbr=on}}
| basin_type = Sedimentary depression, rather than a [[structural basin]]
| plate = [[North American Plate|North American]]
| orogeny = [[Taconic orogeny|Taconic]] ([[Middle Ordovician]])<br />[[Caledonian orogeny|Caledonian]], [[Acadian orogeny|Acadian]], [[Ouachita orogeny|Ouachita]], [[Hercynian orogeny|Hercynian]] & [[Alleghenian orogeny|Alleghenian orogenies]] (Paleozoic and younger)
| age = [[Paleozoic]] to [[Holocene]]
| stratigraphy =
| fields = [[Burra Burra Mine (Tennessee)|Burra Burra Mine]]
| faults =
| footnotes =
| embed =
}}
▲The '''Copper Basin''', also known as the '''Ducktown Basin''', is a
Copper was first discovered in the basin in 1843, and by the 1850s large mining operations, spearheaded by German-born businessman [[Julius Eckhardt Raht]], were taking place. The mines were seized by the [[Confederate States of America|Confederacy]] during the [[American Civil War]] and were the source of about 90% of the copper used by the [[Confederate States Army|Confederate Army]]. After the Civil War, smelting operations, which were used to separate [[sulfur]] from the copper ore, resulted in [[acid rain]] in the area
By the 1950s, mining operations in the Copper Basin began to decline, with the final mine closing in 1987. Today, the [[Ducktown Basin Museum and Burra Burra Mine|Ducktown Basin Museum]] chronicles the geological record and history of the mining operations in the basin.
== Geography and geology ==
[[
The Copper Basin is located in a broad valley in the [[Blue Ridge Mountains]], part of the southern [[Appalachian Mountains]] near the borders of [[Tennessee]], [[North Carolina]], and [[Georgia (U.S. state)|Georgia]]. The basin, actually an area of low hills rather than a true [[Structural basin|basin]], is surrounded on all sides by mountains, including Pack Mountain to the east, Stansbury Mountain to the north, [[Little Frog Mountain]] to the northwest, and [[Big Frog Mountain]] to the southwest, some more than {{convert|4,000|ft|m}} above sea level. A series of hills rise above the basin to the south. The basin has an average elevation of {{convert|1,650|ft|m}} above sea level.{{sfn|Ross|1935|p=95-96}}{{sfn|Emmons & Laney|1926|p=13}}
The [[Ocoee River]] flows through the southwestern section of the Copper Basin, entering from Georgia, where it is known as the Toccoa, and exiting via a scenic gorge between Big Frog Mountain and Little Frog Mountain to the west. The river's Copper Basin segment is located at just over {{convert|35|mi|km}} upstream from the river's mouth along the [[Hiwassee River]] near [[Benton, Tennessee]]. The [[Tennessee Valley Authority]]'s [[Ocoee Dam No. 3|Ocoee Dam Number 3]] created a reservoir that extends into the Copper Basin.{{sfn|Ross|1935|p=95-96}}
Ducktown is located in the center of the Copper Basin near the juncture of [[Tennessee State Route 68]] and [[U.S. Route 64 in Tennessee|U.S. Route 64]]. The city of [[Copperhill, Tennessee|Copperhill]] is located on the southern portion of the basin near the Tennessee-Georgia border
Most of the rocks in the Copper Basin are [[metamorphic rock]]s deposited during the [[Cambrian|Lower Cambrian period]]
== Mining history ==
=== Pre-mining period ===
The Copper Basin was officially part of [[Cherokee]] lands until 1836, when the Cherokee relinquished control of the basin to the U.S. government through the [[Treaty of New Echota]].{{sfn|Brooks|1990|p=17}} The Cherokee were recorded to have inhabited the basin until the late 18th century. The Cherokee village of Kawa'na, which translates into "Duck Town" in English, is believed to have been located on the Ocoee River in the basin
=== Early mining history ===
[[
Copper was first discovered by a European American in the Copper Basin in August 1843 in a creek southwest of what would eventually become the Burra Burra Mine by a [[prospecting|prospector]] who was reportedly panning for gold.{{sfn|Brooks|1990|p=19}} This discovery sparked interest among regional entrepreneurs and opportunists, although the lack of major roads in and out of the basin complicated early mining operations.<ref name=gms/> The first mining operations began in 1847, and that same year the first shipment of copper out of the basin took place.{{sfn|Emmons & Laney|1926|p=30}} This consisted of 90 casks shipped by mule to [[Dalton, Georgia]], about {{convert|70|mi|km}} away, where the nearest railroad was located at that time.<ref name="dailycitizen">{{Cite news |last=Jenkins |first=Robert |url=https://www.dailycitizen.news/news/local_news/civil-war-anniversary-the-east-tennessee-georgia-railroad/article_00987027-c1e6-510e-8651-300c41c5e604.html |title=Civil War anniversary: The East Tennessee & Georgia Railroad |date=October 9, 2010 |work=[[The Daily Citizen (Dalton, Georgia)|The Daily Citizen]] |access-date=2020-02-22}}</ref> The first purchase of land in the Copper Basin for mining activities occurred in 1849 when a British agent bought {{convert|400|acre}} for a price of $30,000 (equivalent to ${{formatprice|{{inflation|US-GDP|30000|1849}}}} in {{CURRENTYEAR}}{{inflation-fn|US-GDP}}).{{sfn|Frye|2017|p=7}} The Hiwassee Mine, the first deep underground mine in the basin, was opened in 1850.{{sfn|Emmons & Laney|1926|p=30}}
In 1851, work began on a road through the Ocoee Gorge to connect the Copper Basin with the [[East Tennessee and Georgia Railroad]] in [[Cleveland, Tennessee]] to the west, which had been completed that same year.<ref>{{cite book|author=Bradley County Historical Society|date=1992|title=Reflections Past and Present: A
Mining operations resumed shortly after the war ended, and in 1866, Raht, who had fled to [[Cincinnati]] during the war, reopened the mines.{{sfn|Maysilles|2011|p=55}} Refining operations began in the Copper Basin in 1871.{{sfn|Brooks|1990|p=23}} [[Steam engine]]s were first used in the mining operations during this time,
=== Expansion of mining operations ===
[[File:Copper mining and sulfuric acid plant1a34317v.jpg|thumb|right|Copper mine and sulfuric acid plant in Copperhill, 1939]]
In the summer of 1889, the [[Atlanta, Knoxville and Northern Railway|Marietta & North Georgia Railroad]] and the Knoxville Southern Railroad built a rail line connecting the Copper Basin to [[Knoxville, Tennessee|Knoxville]] to the north and [[Marietta, Georgia]] to the south, and mining operations resumed the following year.{{sfn|Brooks|1990|p=25}}{{sfn|Maysilles|2011|p=39-40}} A railroad station was constructed in McCay's, and the name was changed to Copperhill in 1908.<ref name=gms>{{cite web|url=https://www.gamineral.org/writings/copperbasin-cochran.html|title=Minerals and Mining of the Copper Basin|last=Cochran|first=Kim|date=<!--Not given-->|website=gamineral.org|publisher=Georgia Mineral Society|access-date=2008-05-30}}</ref> The [[London]]-based Ducktown Sulphur, Copper and Iron Company (DCS&I) reopened the Mary Mine in 1890, and the following year the open-roast heap smelting process was first used in the basin.<ref name=waters/> In 1899, the Tennessee Copper Company
Despite the revival of the mining industry, many problems ensued. Beginning in September 1899 several employees of the DCS&I, which had a policy of not employing unionized members, formed a [[Strike action|
The Tennessee Copper Company eventually merged with the DCS&I, and the merged company began to diversify. Along with copper and sulfuric acid, the company built a [[froth flotation|flotation plant]] to produce [[copper sulfate]] in the 1920s. [[iron ore|Iron]] and [[zinc
In 1937,
|vol=124|reporter=F.2d|opinion=58|pinpoint=|court=6th Cir.|date=December 4, 1941|url=https://law.justia.com/cases/federal/appellate-courts/F2/124/58/1506603/|access-date=2020-04-18|via=Justia}}</ref> This conviction was overturned by the [[United States Supreme Court|U.S. Supreme Court]] in 1943.{{sfn|Dubé|2008|p=59}} The strike officially lasted until May 5, 1940, when members of the IUMMSW agreed at a meeting to end the strike.<ref>{{cite news|author=<!--Staff writer(s); no by-line.-->|title=Miners Decide to End Strike at Copperhill|url=https://www.newspapers.com/
On January 5, 1943, an explosion in the Boyd Mine killed
|author=<!--Not stated-->|website=ducktownbasinmuseum.com|publisher=Ducktown Basin Museum|access-date=2020-04-28}}</ref>
=== Later years ===
World War II brought a brief increase in demand for products from the Copper Basin. A sulfuric acid plant was constructed in Copperhill in 1942, and by 1949 liquid sulfuric acid was being produced.<ref name=waters/> Faced with decreasing demand and increasing foreign competition, however, the mining industry began to decline in the Copper Basin in the 1950s.<ref>{{cite web|url=https://ducktownbasinmuseum.com/history|title=Remembering the golden age of copper.|author=<!--Not stated-->|website=ducktownbasinmuseum.com|publisher=Ducktown Basin Museum|access-date=2020-02-22}}</ref> The Burra Burra mine, which had grown into the largest mine, closed in 1958.<ref>{{cite web|url=http://www.gamineral.org/ducktown-museum-pics.htm|title=Ducktown Museum and the Burra Burra Mine|last=Breisch|first=Rob|date=<!--Not given-->|website=gamineral.org|publisher=Georgia Mineral Society|access-date=2008-05-30|url-status=dead|
The company announced plans to shut down all mining operations
== Environmental issues and
[[File:A train bringing copper ore out of the mine, Ducktown, Tenn.1a34324v.jpg|left|210px|thumb|The Copper Basin in 1939]]
In the early years of the mining operations, the forests in the Copper Basin were logged to fuel the smelters. As early as 1861
[[File:Copper-basin-satellite-1984.png|thumb|right|Satellite image showing the Copper Basin in 1984]]
The state of Georgia began suing the Tennessee Copper Company in the mid
Reforestation and reclamation efforts in the Copper Basin began in the 1930s. In 1939, the [[Tennessee Valley Authority]] and the Tennessee Copper Company began a joint effort to plant replacement trees, and the soil was treated with lime to remove the acidity.<ref name=tva/> A [[Civilian Conservation Corps]] (CCC) camp was established in the basin in 1941 to aid in the reforestation efforts.<ref name=waters/> By the 2000s, the area had been mostly reclaimed.<ref name=nyt07>{{cite news|last=Dixon|first=Chris|title=Up From the Mines in Tennessee|date=December 14, 2007|url=https://www.nytimes.com/2007/12/14/travel/escapes/14copperhill.html|work=[[The New York Times]]|location=New York City|accessdate=2020-02-21}}</ref>▼
▲Reforestation and reclamation efforts in the Copper Basin began in the 1930s. In 1939, the [[Tennessee Valley Authority]] and the Tennessee Copper Company began a joint effort to plant replacement trees, and the soil was treated with lime to remove the acidity.<ref name=tva/> A [[Civilian Conservation Corps]]
==Recent history==▼
[[Image:Ducktown-basin-museum-misc-tn1.jpg|right|210px|thumb|Mining machine parts and tools scattered about the Burra Burra Mine site]]▼
The [[Ducktown Basin Museum]] was established in 1978 by a group of local citizens intent on preserving the legacy of the Copper Basin. The museum was moved to the building that formerly housed the headquarters of the Tennessee Copper Company at the Burra Burra Mine in 1982. It features exhibits on the history of the mining operations in the basin and the geology of the area, as well as artifacts from the mining activities.<ref>{{cite web|url=https://ducktownbasinmuseum.com/exhibits|title=Exhibits|author=<!--Not stated-->|website=ducktownbasinmuseum.com|publisher=Ducktown Basin Museum|access-date=2020-02-29}}</ref>▼
▲== Recent history ==
▲[[
▲The [[Ducktown Basin Museum and Burra Burra Mine|Ducktown Basin Museum]] was established in 1978 by a group of local citizens intent on preserving the legacy of the Copper Basin. The museum was moved to the building that formerly housed the headquarters of the Tennessee Copper Company at the Burra Burra Mine in 1982. It features exhibits on the history of the mining operations in the basin and the geology of the area, as well as artifacts from the mining activities.<ref>{{cite web|url=https://ducktownbasinmuseum.com/exhibits|title=Exhibits|author=<!--Not stated-->|website=ducktownbasinmuseum.com|publisher=Ducktown Basin Museum|access-date=2020-02-29}}</ref>
The Burra Burra Mine was listed on the [[National Register of Historic Places]] in 1983. Many of the structures from the mining operations still remain.<ref>{{NRISref|2013a|dateform=mdy|access-date=February 29, 2020|refnum=83003059|name=Burra Burra Mine}}</ref> The basin was the site of a large flood in 1990 that inundated most of the business districts of Copperhill and McCaysville, resulting in a years-long legal battle between the two cities and forcing Copperhill into bankruptcy.<ref name="wsj">{{cite news|last=Bhatt|first=Sanjay|date=November 20, 1996|title=Feuding Border Towns Bury The Hatchet -- and Strike Gold|url=https://www.wsj.com/articles/SB848426650383943500|work=[[The Wall Street Journal]]|location=New York City|access-date=2020-02-21}}</ref>{{clear}}
== See also ==
* [[
* [[Copper mining in the United States]]▼
* [[
▲*[[Copper mining in the United States]]
== References ==
{{reflist}}
== Bibliography ==
{{refbegin}}
* {{Cite book |last=Barclay |first=R.E. |title=Ducktown: Back in Raht's Time |publisher=[[University of North Carolina Press]] |year=1946 |isbn=0807868493 |location=Chapel Hill, North Carolina
* {{cite thesis|last=Brooks|first=Jeanne M.|date=April 17, 1990|title=Polk County: An Appalachian Perspective
|publisher=University of Tennessee Honors Thesis Projects|url=https://trace.tennessee.edu/cgi/viewcontent.cgi?article=1053&context=utk_chanhonoproj
* {{cite report|last1=
* {{cite report|last1=Emmons|first1=William H.|last2=Laney|first2=F.B.|date=1926|title=Geology and Ore Deposits of the Ducktown Mining District, Tennessee|url=https://pubs.usgs.gov/pp/0139/report.pdf|publisher=U.S. Geologic Survey|ref={{SfnRef|Emmons & Laney|1926}}}}
* {{
* {{cite
* {{cite report|last=Ross|first=Clarence Samuel|date=1935|title=Origin of the Copper Deposits of the Ducktown Type in the Southern Appalachian Region|url=https://books.google.com/books?id=nPTNAAAAMAAJ|publisher=U.S. Geological Survey|via=Google Books}}
{{refend}}
[[Category:Copper Basin (Tennessee)| ]]
[[Category:Geography of Appalachia]]
[[Category:Geology of Tennessee]]
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