How to Mine Opal Gems in the Outback

By Smarter Every Day

YouTube

13 min

That’s tunnels, not shafts.

Published in 2016.

Bibtex Data

@misc{smarter-every-day2016-mine-opal,
    category={av},
    title={{H}ow to {M}ine {O}pal {G}ems in the {O}utback},
    author={Smarter Every Day},
    year=2016,
    month=dec,
    minutes=13,
    keywords={wider,geology,australia},
    ranking={rank3},
    url={https://youtu.be/zHecdSDz4uU}
}

Added	Tue, 04 May 2021 18:38:58 +0700
Updated	Sat, 21 May 2022 14:25:43 +0700

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