Search results
Results from the WOW.Com Content Network
The Homestake Mine was a deep underground gold mine (8,000 feet or 2,438 m) located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in the Western Hemisphere . The mine produced more than forty million troy ounces (43,900,000 oz; 1,240,000 kg) of gold during its lifetime. [1]
The expedition led to the recovery of more than 15,500 gold and silver coins, 45 gold bars and hundreds of other gold nuggets, gold dust, jewelry and artifacts. [35] In December 2015, Odyssey announced the sale of part of its assets to a company called Monaco Financial for $21 million. This capital allowed the company to reimburse a $11.7 ...
At the time of her sinking, Central America carried gold then valued at approximately US$8,000,000 (2021 value of $765 million, based on a gold price of $1,738.70 per troy ounce = $56,087 per kg). The valuation of the ship itself was substantially more than those lost in other disasters of the period, being $140,000 (equivalent to $4,720,000 in ...
For premium support please call: 800-290-4726 more ways to reach us
The Black Swan Project is the project name given by Odyssey Marine Exploration for its discovery and recovery of an estimated US$500 million (£314 million) worth of silver and gold coins from the ocean floor. Initially Odyssey kept the origin of the treasure confidential.
Tommy Gregory Thompson is an American treasure hunter known for his leading role in the discovery of the wreck of the SS Central America on September 11, 1988. [4] He is also the author of a book about the discovery, America's Lost Treasure, published in 1998, [5] and is a main character in the best-selling 1998 non-fiction book Ship of Gold in the Deep Blue Sea by Gary Kinder.
Polymetallic nodules on the deep seabed in the CCZ Example of manganese nodule that can be found on the sea floor. Polymetallic nodules are found at depths of 4–6 km (2.5–3.7 mi) in all major oceans, but also in shallow waters like the Baltic Sea and in freshwater lakes.
Gold mining produces more waste than mining of other minerals, because it can be mined at a lower grade. Tailings can contain lead, mercury, cadmium, and arsenic. These toxins can pose health risks for local communities. [69] Arsenic is typically found in gold-containing ores, and gold processing may contaminate groundwater or the