John-Mark's Geo Tutorial Episode 3- Drilling
3:24
Added: 2 years ago
From: ttamason1
Views: 3,794
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  • interesting and knowledgeble video

    prakashjha11 1 year ago

  • Thanks for the videos...quick question...how much does it cost to have a core sample drilled?

    wardbros 1 year ago

  • Thank you for this interesting video.

    Zanchetta99 1 year ago

  • Your tutorials are truly a great resource. I look forward to the next one.

    terriyakisushi 2 years ago

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