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As 99.9% pure thorium oxide, price per thorium contained. Free on Board port of entry, duty paid. 91: Pa: Protactinium: 15.37: 1.4×10 −6 [i] (3.878 × 10 10 kg) No reliable price available. In 1959–1961 Great Britain Atomic Energy Authority produced 125 g of 99.9% pure protactinium at a cost of $ 500 000, giving the cost of 4 000 000 USD ...
These prices are more an indication than an actual exchange price. Unlike the prices on an exchange, pricing providers tend to give a weekly or bi-weekly price. For each commodity they quote a range (low and high price) which reflect the buying and selling about 9-fold due to China's transition from light to heavy industry and its focus on ...
The environmental cost of copper mining was estimated at 3.7 kg CO 2-eq per kg of copper in 2019. [51] Codelco, a major producer in Chile, reported that in 2020 the company emitted 2.8 t CO 2-eq per ton (2.8 kg CO 2-eq per kg) of fine copper. [52]
At the same time, the price of copper dropped to $0.19 per pound, down from a high of $0.55 in 1864. Rather than invest in new equipment and explore for new ore bodies, the company stopped working the mine, and turned it over to tributers – independent miners who paid for the privilege of mining, usually paying a share of the ore they took out.
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Currently, auctions are asking between $2 and $3 per pound for quantities of 10 to 25 pounds of coins. One auction featured 100,000 pennies -- weighing about 680 pounds -- that sold for $1,500 ...
The Old Copper Complex of the Western Great Lakes is the best known, and can be dated as far back as 9,500 years ago. [ 4 ] [ 1 ] Great Lakes natives of the Archaic period located 99% pure copper near Lake Superior , in veins touching the surface and in nuggets from gravel beds.
That should eventually send prices soaring to $15,000 per ton, he predicted. Coppers prices are already at record highs, with benchmark prices in London at about $10,000 per ton, more than ...
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