Comment

Comment by markkot on February 19, 2013 at 8:43am

Jeffrey, thanks for the pics....  I like learning and seeing the technical aspect of the drilling.  Brian, thanks for your commentarys and great info you bring to the site...  thanks, to both of you.  mark

Comment by EMC on February 16, 2013 at 2:54am

Hughes tool "tooth" bit, soft formation, air or fluid.

Comment by Brian Powers on February 15, 2013 at 9:19pm

Jeff -

What you have pictured here is a good old fashioned rotary "tri-cone" rock bit. From the large cone size and large teeth, as well as the upward facing jets above the cone bearing journal housings, I'd say that this bit is used for drilling the surface hole section. The bit appears to be lightly used and in good shape; it would not surprise me if it would be able to drill several more holes before having to be replaced.

 

Thanks for these photos,

 

Brian