Jump to content

Robert Thomasson

  • Content count

  • Joined

  • Last visited

  • Days Won


Robert Thomasson last won the day on August 11 2017

Robert Thomasson had the most liked content!

About Robert Thomasson

  • Rank
    Advanced Member

Recent Profile Visitors

1,795 profile views
  1. Robert Thomasson

    Life At The Bottom Of A 64' Shaft

    Yes, time for an update! Also very glad to hear that you have some younger helpers!
  2. Robert Thomasson

    Mokelumne river gold

    John, no replies must mean lots of gold and everyone's keeping quiet about it. I'm a desert rat so no first hand experience in the area. Here's a link to an article about Mokelumne gold: Mokelumne Gold If you are an ICMJ subscriber here is a December 2006 article on the Mokelumne River: Mokelumne River Canyon ICMJ Article Good Luck!
  3. Robert Thomasson

    Commercial Drywasher

    William, good luck with your testing and I hope you will return here and let us know how it worked out.
  4. Robert Thomasson

    complex ore

    Gary, not sure where Chris is. I'll try giving your question a bump and maybe it will attract some attention.
  5. Robert Thomasson

    2017 Plans

    That is a good looking well designed and built trommel! A similar one is on my project list. How did your season at your 80 acre prospect work out? My prospecting this year was a series of distractions and I didn't get to nearly as many places as I planned on. Wait 'til next year.
  6. Robert Thomasson

    Auger Feed System

    The drill bit is a great idea!
  7. Robert Thomasson

    Auger Feed System

    Can you adapt a posthole augur? Here is a company that seems to specialize in augur systems. Don't know what they cost or if they might be suitable for your purpose. http://washburncompany.com/Auger_flighting.htm
  8. Robert Thomasson

    Old stamp mills

    Charlie Connell is the man when it comes to restoring and repairing stamp mills. I'm sure he'd be happy to answer any specific questions. http://stampmillman.blogspot.com/ I worked on the Donovan's Mill project in Silver City, NV with Charlie for a very short time, still learned a lot from him. Do you own a stamp mill? If so, we need pictures!
  9. Robert Thomasson

    New Rock Drill Design

    Sorry about the dead link. As I recall the drill was a Rube Goldberg type of contraption. The operator turned a crank and a series of hammers on a rotating wheel hammered away on the drill steel. The New Rock Drill Design thread title is sort of a joke.
  10. Robert Thomasson

    Pinpointer For Gold?

    I use an MD-20. It doesn't have the depth of the regular pinpointers but it's very sensitive for checking crevices where other pinpointers aren't sensitive enough. Interesting that it's very sensitive to small gold but doesn't have much depth even for larger gold. Bob
  11. Not sure if this is still an active poll? My response is SDC-2300. Bob
  12. Robert Thomasson

    New Rock Drill Design

    Never seen one of these before, sure could use one. https://www.facebook.com/1665306543684280/videos/1674049352809999/
  13. Robert Thomasson

    Small Scale Hard Rock Mining

    Really hard if not impossible to answer via the internet. You really need to get an experienced mining geologist out to look at your property first hand and follow his advice. Bob
  14. Robert Thomasson

    Rye Patch Gold

    Jim, I found an old 1915 USGS Bulletin 601 on the National District by none other than Waldemar Lindgren himself. I don't think the National District has or is being heap leached, but I could be wrong. http://pubs.usgs.gov/bul/0601/report.pdf I have a friend who found a tennis ball sized rock in a Northern Nevada tailings pile that really set his detector off. It looked like a dull gray rock with no indication of mineralization. He took it home and cut it open to find that it was nearly solid electrum inside. It was a couple of weeks before he could get back out to the tailings pile and when he arrived there, the pile was completely gone. About Ryepatch, for some reason I'm just fascinated by the Eugene Mountains to the North. Spent quite a bit of time there, haven't found much but I keep going back. At least one tertiary paleochannel flowed through the Eugene Mountains. There are old workings in part of a channel there but I haven't found any reports of how much gold, if any, was recovered. And, of course there is Lunker Hill! Bob
  15. Robert Thomasson

    Don't Do This!

    Chris, detectorists like you that have been detecting for many years were taught in the beginning to fill their holes. Now, there are so many people with detectors who haven't been taught and just don't care. Not sure what can be done about it, other than all of us taking a more vocal approach when we see people not filling their holes.