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geof_junk

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Everything posted by geof_junk

  1. That is a POST that should be read by most people who detect. It backs up my experience. I don't discriminate at all with PI machines as junk iron is usually too shallow, if it is deep I'm detecting outside my choice of ground. With VLF machines I always lift the coil to a height that brings the volume down to a low distinct value then discriminate and not over loading the earphones and detector this would help in guessing the size and shape as you mention in the article .................I have one point of your article that needs updating ........ your 5th photo has the Quote "Can a metal detector really find deep, tiny nuggets? Author Gerry McMullen has the answer right at his fingertips! " Most of us would say that is not tiny these days 😉
  2. I hope this is not off topic. These teeth plates were detected in the sea about 20 years ago buy my brother in law who died in 2004. The 2 oz nugget was found in 1980 in Wedderburn Victoria Australia. Gold plates were commonly made by backyard denticle worker prior to gold coming of the gold standard from gold sovereign.
  3. I tried dowsing on a sunbaker got a big response my hands vibrated really strong but I guess that not fair as it was in the multiple ounce range and I could see it. 😁
  4. Taking the high figure of 30,000 tons of gold would be nearly 1 billion ounces. With a population of nearly 8 billion if it was shared equally then we all would have an eighht of a ounce each (4 grams). Well at least I have more than my share.🤑
  5. Back in those days home loans hit 17.5% and Vietnam Vet in Aus had loans of 4.5% at the moment House loans are down to less than half of Vet House loans .As the "10% doubles every 7.5 years or 7.5% doubles every 10 years" RULE it would pay to remove debts during high interest rates and buy gold during low interest, that is common sense (or is it uncommon sense🤔) . BUT OUR GOLD has emotional VALVE.😍
  6. Beware of boiling hydrochloric in a non vented area. You will get a lot of fumes that are dangerous and corrosive. Don't ask how I know!
  7. Jasong I'm on the end period of life and detecting, but that is the best advice I have seen from a younger person on gold and life path. I hope other learn from it.👍
  8. I would keep it as it is, but if you are selling the gold because you can better use for the money then dolly it for quick sale. Remember once it smashed it is all over, so leave it as it is till you sell it.
  9. I agree with the quote " I have access to stronger acids such as hydrofluoric acid in high concentration form but I advise anyone who would like to use this type of acid that it is extremely dangerous and only someone with experience and safety equipment can proceed with caution when using it." Back in the early 1980s I was involved with the operation of removal of milling scale on a large boiler. We had several truck loads of hydrofluoric acid the size of fuel trucks. It was shipped in steel tanks at a strength of 35% how ever it will attack oxides and silica ( glass ) but most important it will get into your skin will little feeling that it has happened and it will then destroy your bones. So correct usage is really needed or its deadly. Products like WHINK in Aust. are used for mag wheel cleaning and it is about 1% and has other chemical included.
  10. A Mate from my area held a nugget for 2 or 3 years trying to get a good price for a solid 96 oz nugget. At the time gold was about $800 AUD an oz. When the price went up a bit he let it go for less than 10% above gold price.
  11. No way it has to be before Easter or September School holidays or they will miss out on an excellent opportunity
  12. Quote....Agreed and some of those techniques work well or not so hot depending also on the size of the target. Edge on methods work well if the target is good sized, and can be almost required if the target is huge. They do not work well if the target is really small. Small targets may not sound off on edge until the are almost touching the edge of the coil. With a DD I typically step back and move forward rather than moving the coil backwards towards my feet but the net result is exactly the same.Fast target pinpointing and recovery is more of an advanced technique and exact methods depend on size of the target, size of the coil, configuration of the coil and likely approximate depth to the target. But it is something well worth the effort. If using a DD and the signal is small switching to mono and using the edge of the coil will help however if the signal drops expect it to be deeper than expected. On very deep nuggets of respectable size and quiet sound I set the detector on manual and approach from back where there is no sound and slowly bring the coil in listening for the start and end of the signal and mark the centre then do the same it at 90° or some convenient angle. Where they cross is target. Note the hole should be more a narrow trench than a circle to enable you to get the overburden out quickly. An added point is the uses of a pick. Most people must work in an office that I see using a pick on the gold fields. The force hitting to ground is combination of the weight and the speed of the pick head. If you watch a carpenter using a hammer you will see him/her use their wrist to double the speed of the hammer head. I find I can do more damage to the ground using a smaller handle pick with one hand than most people using both hands with a long handle pick. I hope that this is on topic as it reduces time wasted getting the gold.
  13. The PDF file of the second link in first post.http://41.67.20.41/bitstream/handle/123456789/18621/Metal Detector.pdf?sequence=1&isAllowed=y Metal Detector Second link.pdf
  14. The site has some problems...... It was a good write up on coils in the preamble I got ¾ of the way though it. I will try and get on it again when the site get back up as it had a lot of technical details in it over 40 pages. The site error listed below. This site can’t be reached 41.67.20.41 took too long to respond.
  15. You made him wear socks how did he manage that with his throngs (flip flops) 😆
  16. It is a Texas outfit, well it the cognac. 🤣
  17. From Garretts. How do I pinpoint a target?Slowly and methodically sweep your searchcoil from side to side, keeping it one to two inches above the surface. Overlap each sweep by advancing the searchcoil by about one quarter to one half of its diameter. Scanning in a straight line helps to keep the searchcoil level and the overlap sweeps uniformly while reducing the likelihood of lifting the searchcoil after each sweep. Listen for a peak in the audio sound. Hold the searchcoil one to two inches off the ground and slowly sweep it back and forth in an X pattern. Note where the sound becomes the loudest. The target should be located in the center of the imaginary X. Many of today’s modern metal detectors are equipped with an electronic pinpoint button. Read your owner’s manual for complete electronic pinpointing instructions. I would use the 90° method to get a better position.
  18. So I thought I would throw a spanner into the discussion. Here goes. We have heard of the double D coils what about a triple D coil. Well that outside my knowledge but let look at a quad D coil the oldest ground balancing coil. Have a look at these links.....LINK....https://www.phys.k-state.edu/reu2011/nnorvell/Metal_Detector_Research.html and more detail.....LINK....http://41.67.20.41/bitstream/handle/123456789/18621/Metal%20Detector.pdf?sequence=1&isAllowed=y Are we on topic. _________________ Regards Geof. geof_junk Contributor Plus Number of posts : 794Location : Gippsland AustraliaRegistration date : 2008-11-11
  19. You are on the ball. Sorry I not sure it was because I was thinking of the meal I was cooking for the wife or to much cognac. 😇 But this time I think I'm on the ball.
  20. Have not tried or connected but it is an Australian company I'm interested. ....LINK.... https://metaldetectingstuff.com/
  21. They are waiting for all the gold in Africa to be found so they can show it and hype up our release.🥱
  22. You are spot on about pin pointing. I have got to the stage of not watching a lot of video finds now because of the wide spread lack of pin pointing and time they spend getting the gold out of the ground because of it..
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