What the mining of ounce ?

The mining of an ounce refers to the process of extracting one troy ounce of a precious metal, such as gold, silver, or platinum, from the earth. This involves various methods such as drilling, blasting, and processing the ore to extract the desired metal. The mining of ounces is a common unit of measurement in the mining industry to determine the amount of precious metal extracted from a mine.

One ounce of what?

The term "mining of ounce" is not a specific concept in any industry or field.

Please provide more context or specify the substance or material you are referring to for me to provide an accurate response.