Questions tagged [mining-engineering]

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Why is the All-In-Sustaining cost for mining gold so high relative to silver?

The All In Sustaining Cost for mining an ounce of gold at the moment is around \$1,000 ; i.e. if gold mines sold gold at around \$1,000 an ounce they would make neither a profit or a loss. The ...
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How would you find the amount of 'usable power' in a typical coal mining process

Suppose you have a typical coal mining process composed of the following steps: (1) Excavation -> (2) Crushing -> (3) Storage -> (4) Rail -> (5) Power Station The idea is the coal is ...
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3answers
98 views

Extracting other mineral from salt in evaporated seawater

I recently stumbled upon this news, seawater contains 47 minerals and metals. Starting with the most abundant and proceeding to the least abundant, these are chloride, with a concentration of 18 980 ...
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1answer
104 views

Can the US realistically mine and produce all Rare Earth Elements, without relying on China? [closed]

Why exactly isn't the US mining and producing its own rare earth metals (REEs)? I'm baffled by the mixed messages below. Because China uniquely possesses some REEs? US safeguards against pollution ...
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2answers
722 views

Why is a mining cage called a Mary-Ann?

I apologize in advance if this is off topic - maybe it is more of an English language query... Please feel free to migrate or close if needed :) I have seen mine cages/service lifts referred to as ...
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2answers
238 views

What would you call this mining vehicle? (Ural-20R, used in mining)

On the image below is a mining machine produced by the Kopeysk Machine-Building Plant. I'm not sure how to call it in English. The Russian name is "prokhodchesko-ochistnoy kombain". Multitran offers ...