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The 1970 standard established by the U.S. government for carbon monoxide emission for automobiles limited exhaust to 23 grams of CO per vehicle mile. Assume that in a given metropolitan area there are 82,700 automobiles, driven an average of 13.5 miles per 24 hour period. How many tons/day of CO could legally be discharged into the areas atmosphere
In April 2010, gold was worth about $1,118.45 per troy ounce. Using that value, and about 14.583 troy ounces in a pound, one pound of gold is worth about $16,310.36.
As you can see in the example above, the deposit does not have to be enormous in size (only 500 meters long by 100 meters wide) to contain a valuable deposit (approximately $6 billion worth of minerals). However, in order to be as realistic as possible about this valuation, you can not assume that the complete ore body contains the same grade (i.e. 2% copper and 1.5 gram per tonne gold).
For example, to find out how many grams in a ton and a half, multiply 1.5 by 1000000, that makes 1500000 grams in a ton and a half. 1 Metric Ton = 1 000 000 Grams. How to convert grams to metric tons? 1 Gram (g) is equal to 0.000001 metric ton. To convert grams to metric tons, multiply the gram value by 0.000001 or divide by 1000000.
One troy ounce in weight and mass sense converted to grams equals precisely to 31.10 g. How many grams of weight and mass system are in 1 troy ounce? The answer is: The change of 1 oz t - ozt ( troy ounce ) unit for a weight and mass measure equals = into 31.10 g ( gram ) as per its equivalent weight and mass unit type measure often used.
Here's How Many Tons Of Rock You Have To Mine Just For An Ounce Of Gold. ... NOTE: We calculated tons mined per ounce of gold by taking the inverse of Barrick's measure of ounces per ton.
Question: Recall That 'ore' Is A Material (usually Rocks Of Minerals) From Which Chemicals Can Be Extracted At A Profit. More Than Half Of The Gold Mined In The U.S. Is From Mines In Northern Nevada. These Mines Produced An Average Of 3.2 Grams Of Gold Per 2000-pound Short Ton Of Ore In 2012.
Mar 20, 2013· Ten thousand phones weigh one ton. [With gold selling for about $1,580 per ounce, that would yield $15,800.] How about a laptop? Magann: Two hundred laptops would yield five troy ounces of gold. How much is in an average desktop? Magann: A PC circuit board, where the gold .
Question: Recall That "ore" Is A Material (usually Rocks Or Minerals) From Which Chemicals Can Be Extracted At A Profit. More Than Half Of The Gold Mined In The U.S. Is From Mines Northern Nevada. These Mines Produced An Average Of 3.2 Grams Of Gold Per 2000-pound Short Ton Of One In 2012.
Apr 25, 2013· Here's How Many Tons Of Rock You Have To Mine Just For An Ounce Of Gold. Sam Ro Apr 25, 2013, 2:52 AM ... We calculated tons mined per ounce of gold by taking the inverse of Barrick's measure of ...
contains more gold than that recovered from 17 t of gold ore.1 In 1998, the amount of gold recovered from electronic scrap in the United States was equivalent to that recovered from more than 2 million metric tons (Mt) of gold ore and waste.2 ... (10.4 grams per metric ton (g/t)) and an average gold ore feed grade of 0.9 g/t for a typical gold
Sep 04, 2018· Good question. And the answer is one of the first things I learned from a miner: it depends. That's because, first, the costs to remove gold are not all the same—some gold is easy to retrieve and some is not. We once found a small 15 gram/tonne de...
Based on your answers in c and d above, what is the current average profit per ton of gold ore from northern Nevada? B. The average iPhone 5 contains 0.0012 grams of gold and weighs 3.951 ounces (avdp). 1. There are 16.00 ounces in one avoirdupois pound and 2000 pounds in one short ton (avoirdupois ton).
The World Gold Council defines a high-quality underground mine as having a gold ore density between 8 and 10 g/t (grams per ton), while a low-quality underground mine has a gold ore density of 1 ...
Assaying Ores to determine gold content - Nevada Outback. Once you have the weight of the gold, and you have the weight of the original sample. You can use the following method to determine the weight per ton of gold in the ore. Mass assays: calculating the content. Weight of your sample in grams / 908000 grams per ton = weight of your sample ...
Mar 24, 2017· GOLD: It is usually reported in grams per tonne (or g/t), although sometimes, in the US, it is in oz/ton. A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for ...
Ore grade refers to the proportion of gold contained in the ore of a particular mine and is represented in grams per tonne (g/t). ... higher grades as they contain more gold and will usually be ...
Once you have the weight of the gold, and you have the weight of the original sample. You can use the following method to determine the weight per ton of gold in the ore. Mass assays: calculating the content. Weight of your sample in grams / 908000 grams per ton = weight of your sample in tons.
A lower grade gold ore would contain something like 5 grams of gold per ton of earth (5 parts per million). So gold ore needs to be concentrated by about 1,000 times its average concentration to become viable. High concentrations of gold were discovered in South Africa in the 1880's.
Average grade of the silver-copper ore has been 22.89 ounces per ton of silver and 0.83% copper. Average grade of the silver-lead ore has been 8.18 ounces silver and 8.8% lead per ton of ore. The mine is currently producing silver-copper ore at a rate of approximately 625 tons per day.
How many tons of ore contain one ounce of gold? 3 4 5. ... marginal yield something on the order of 4 to 6 grams of gold per ton of ore, and you can do some simple math from there (perhaps using 5 ...
Aug 16, 2014· It's said that a bag of used mobile phones contains a gram of gold. There are a lot of mobile phones in the world, so how much of the gold we .
The value per ton of crude ore is then $10 for lead concentrate and $8.50 for zinc, or a total of $18.50 per ton of crude ore. By perfect concentration, assuming the lead to .
A sample of 12 months of data points on a subset of the gold producer majors supports the observation of higher ore value per tonne equals higher enterprise value per ounce of gold equivalent. Notes The above chart showing two metrics, Average Ore Value per Tonne versus Enterprise value per ounce of Gold Equivalent (total resources) over 12 ...
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