US annual gold production, 1840-2012. Gold mining in the United States has taken place continually since the discovery of gold at the Reed farm in North Carolina in 1799. The first documented occurrence of gold was in Virginia in 1782. Some minor gold production took place in North Carolina as early as 1793, but created no excitement. Gold Mining in America . By Albert Bolles, 1879. Old Prospector. Although some specimens of gold were collected in North Carolina and Virginia previous to the American Revolution, no excitement about the subject arose until the discovery in California in People also ask What are the steps in the gold mining process? Yet mining the ore is just one stage in a long and complex gold mining process. Long before any gold can be extracted, significant exploration and development needs to take place, both to determine, as accurately as possible, the size of the deposit as well as how to extract and process the ore efficiently, safely and responsibly. Gold Is Mined | Gold Mining Process | World Gold Council
Finding Deposits. The first step is discovering where gold deposits may be. Geologists use special ‘geology’ maps to look for promising areas to explore further. Analysis of Promising Areas. Once some promising areas are identified through their geological characteristics, targets for drill testing are outlined using a variety of techniques, including remote sensing, geophysics and geochemistry (…both air and ground based). Drill Testing/Samples. Next, rock samples are taken through drill testing and analyzed. Geologists and mining engineers use these samples to determine if gold actually exists, the size of the deposit and the quality of gold in the ground beneath. Type of mine. If it’s determined the amount and quality of deposits makes mining worthwhile, engineers will next determine the type of mine that’s needed, any physical obstacles and the impact the mine will have on the surrounding environment. Sometimes open-pit mining is used, such as at the Fort Knox Mine in central Alaska. Barrick Gold Corporation has one of the largest open-pit gold mines in North America located on its Goldstrike mine property in north eastern Nevada. Other gold mines use underground mining, where the ore is extracted through tunnels or shafts. Yet mining the ore is just one stage in a long and complex gold mining process. Long before any gold can be extracted, significant exploration and development needs to take place, both to determine, as accurately as possible, the size of the deposit as well as how to extract and process the ore efficiently, safely and responsibly.