Replies

To: Cletus.D.Yokel

I was talking about chert NK tunnels/caverns in ‘really tired mountain syndrome’, LOL.

666 posted on 04/25/2018 11:44:16 AM PDT by txhurl (Go get 'em, SQott!)

To: txhurl

Chert is HELL on drill bits. Even on diamond bits.

681 posted on 04/25/2018 11:53:21 AM PDT by Cletus.D.Yokel (Catastrophic, Anthropogenic Climate Alterations: The acronym explains the science.)

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