The area of Coal Mines Historic Site is 3,524,700.0000000005 square meters.
There were approximately 48 mines in the Cannock area, which were mostly coal mines. These mines played a significant role in the industrial history of the region and provided employment to many people.
The area of Arcadia Historic District is 13.759 square kilometers.
No, of course not. They work in coal mines. Caves don't develop in the Coal Measures. Some 18-19C lead-miners in places like the Peak District (English Midlands) broke into or mined from natural caves in the area's Carboniferous Limestone. They were exploiting ore-bodies that had been intercepted by later cave development. The iron-ore deposits in the Forest of Dean (England) did form within caves, but as a general rule caves and economic metallic ores do not otherwise co-exist. Oh, and the adjective "underground" is tautologous!
King Solomon's Gold Mines are believed to be located in the region of the Arabian Peninsula, possibly in the area of modern-day Saudi Arabia. However, the exact location of these mines remains a subject of speculation and debate among historians and archaeologists.
Coal was discovered in Tazewell, Virginia, which quickly became the main industry of the area. This discovery led to the development of coal mining as the primary economic activity in Tazewell.
The area of Steamtown National Historic Site is 252,847.589271552 square meters.
The area of Andersonville National Historic Site is 2,080,084.2011136 square meters.
The area of Christiansted National Historic Site is 109,872.15186816 square meters.
The area of Slater Mill Historic Site is 17,118.202666752004 square meters.
The area of Hampton National Historic Site is 251,066.972445696 square meters.
The area of Koreshan State Historic Site is 546,325.617024 square meters.
(A+) it's coal mines
There are no active coal mines in Telford, as the last coal mine in the area closed in the 1970s. Telford is located in Shropshire, which historically had coal mining activity, but the industry has since declined.
The area of Nicodemus National Historic Site is 651,543.8840064 square meters.
The area of Locust Grove State Historic Site is 4,046.8564224 square meters.
The area of Longfellow-Evangeline State Historic Site is 635,356.4583168001 square meters.
The area of Jimmy Carter National Historic Site is 287,326.8059904 square meters.