The continuous mining method is an improvement on the block caving method of underground mining technology.

FORBES: Continuous Mining To Help Chile Extend Mine Life, Save Money

You instruct your fund company (by phone or online) which shares to sell, as you would with an individual stock. (Again, make sure you get and save that confirmation.) Using this method requires you to track your cost for each block of shares, including those purchased with reinvested distributions.

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