Jump to content


+Premium Members
  • Posts

  • Joined

  • Last visited

Everything posted by t8r

  1. t8r

    USGLO benchmarks

    Thanks all, sorry for the multiple posts figured out why i could not see that on scaredycat, cross state line from idaho and links don't show now logged as destroyed
  2. t8r

    USGLO benchmarks

    I have a picture but cannot post as i do not have an approved url for it.
  3. t8r

    USGLO benchmarks

    I have a picture but cannot post as i do not have an approved url for it.
  4. A friend that works in the area brought me a GLO brass cap the other day (that he found in a gravel road) as he has heard me talking about BM hunting. At first i thought it was a weird cadastral marker. After closer examination, i realized that i have an actual GLO benchmark from 1911. Examination of the topo in the find area reveals many such markers. The one i have is marked for elevation 5601; the map BM at the found location indicates 5600 feet, i suppose an adjustment was made to GLO or BLM data here. Coordinates as determined from google earth are N41° 50' 23.94" by W116° 14' 04.36". I wonder if anyone knows of any info on these BMs.
  5. The world is changing shape. BMs and tri stations are both useful to keep track of these changes. (geodetic survey). A survey of a piece of land might have been done using a particular BM as a reference, after many years that BM may be the only reference still findable. It's a total hoot to find one that others (ngs) have given up on. Then there is the thrill of going after one or a set of tri stations who's paperwork got mixed up from the getgo. I have been looking for NV1190, NV1188 for nearly 2 years now. The physical 'to reach' is over 30 miles from the coordinates given and the geography has changed a lot in the area described.
  6. I think it would be safe to assume that the reset was created because the original was destroyed, covered up by a road project, or otherwise destroyed. The original would not have been logged as destroyed because it was not found "out of it's setting. Isn't that what resets are about?
  7. Awesome story. If you were trying to make someone jealous, it worked. If you weren't trying to make someone jealous, it worked. Thanks john
  8. t8r


    Some surveyor buried their dog named stephy behind the rock?
  9. t8r

    Good or Poor?

    I'm going to guess, as a non pro here, that a surveyor would not trust this one. Too many variables here. If the rod only extends deep enough to allow frost heaving, it could have been pushed over more than is obvious. Too many other options these days. I've been watching local surveyors, and they seem to have their favorite station upon which to set up the reference transmitter, on a high spot, outside of town that is not likely to be disturbed. Remember, this was set flush with the ground. It will be interesting to see the professional input here. There seem to be some really stable vertical stations, deep rod with lid, that have been used by local engineers for horizontal reference. They have the precise coordinates and do not always share them.
  10. Don't forget the distance from the pole. They don't move those very often, if it is there at all. When you get the metal detector in hand, take it to an easy benchmark and test it's reaction to the bronze disc. My metal detector is about high end of the cheapies ($100) and will detect the discs about 5 0r 6 inches underground.
  11. I guess what I don't understand is the government putting something in the ground then not keeping a record of it. I've posted a couple Idaho Highway Dept. discs on Waymarking. Then when in Boise went into The ITD location department and requested more info on the marks. No one there had a clue who set these marks or why. No record at all. http://www.Waymarking.com/waymarks/WM6415_Slick_1960
  12. Thanks for all the help. That establishes that the holes for mounting were never created with any kind of a hole saw. Likely that someone was playing around with a diamond or carborundum hole maker when the station was "OCCUPIED TO ESTABLISH ETVA ELEVATION" in 1975 or at some other time. So what the heck does ETVA stand for?
  13. Do I detect a note of sarcasm there. Now I'm trying to picture someone out there in January 1947 attempting to drill a 3/4 inch hole 2 or 3 inches into a chunk of basalt with that infernal tool in the picture!
  14. I guess what i was really looking for was: What were the standard tools for drilling holes in settings in 1947. Someone here knows. No one is leaving until i find out. If a diamond cutter was in the tool kit, that would explain why The circle was there. Possible scenario: Sheep herder rides up, dismounts and gets in a conversation with the head man on the job (the head man happens to be able to speak Basque), The conversation leads to a discussion of, how the hole was drilled in the rock. Of course, the duty hole driller showed the sheepherder how it worked. This certainly would throw reasonable doubt on Paul's theory about the crop/boulder circles. I wondered what the monumenters were using to power the drills in those days. Gas powered generator, gas powered drill, or extension cord from hotel.
  15. That's the only one I've seen. I will be checking more marks in the area and will be watching for more.
  16. It's a lot of fun benchmarking around here (83647). There are a ton of old BMs in the area, Many of which have not been logged in 50 or more years. Yesterday the weather was cold and windy, so I drove out to NV0971 (1947) and log it. That gave me a chance to start exploring the old glenns ferry-castleford road (not on current maps). The settings for the station and RMs are set in basalt boulders that were brought in from nearby and buried for the purpose. The practice of moving boulders into sandy areas for BMs was commonly done in the area. I can't get Groundspeak's link thing to work so here is the URL. http://www.geocaching.com/mark/details.aspx?PID=NV0971 My question involves the cutting tools used for making the hole for plugging the disc into. I just assumed (there i go assuming again) that an apprentice with a star drill and hammer would be the mechanism involved. But look at the nice circle cut into that rock. Looks like some kind of hole saw that did not need a pilot hole. What was it they were using? Additionally, rock outcrops were often used for settings. What did they use for power for turning a drill? Electric generator, gas powered drill, or human power?
  17. Finding all parts of a tri station makes it interesting. 50 or 75 year old azimuth marks can be dauntingin some cases.
  18. The more I look at your picture, the more it looks like a piece of bubbly basalt that has been mortared into the setting of an earlier station. If the hole were 1/2 to 3/4 inch diameter and 2 or 3 inches deep? That would the correct size to pound a self anchoring disc/stem into. Or possibly: Plumbago Packing (lead) I remember seeing men use it for sealing cast iron sewer connections by pounding it in with a hammer and a rod that was made for that purpose. We cant tell what size of black stuff or the hole. ?? The following is from [url=http://www.archive.org/stream/durhamrubbercomp00durhuoft Our Plumbago Packing will pack any kind of air, steam or water joints. It is particularly well adapted for packing expansion or heated joints, as it does not burn or char as other packings do. It readily conforms to any unevenness in the surfaces between which it is placed, and therefore obviates the necessity of facing joints, thus reduc- ing the cost of construction and repairs. By the application of either a little naphtha, rubber cement, or both, to the surfaces two pieces of Plumbago Packing can be put together, and, under pressure, will become as solid as one piece. In this way uneven joints can be made quickly, easily and economically. When this packing comes in contact with heat it becomes vulcanized and of a metallic nature, so that oil does not have the injurious effect upon it that it does upon ordinary rubber packings. Plumbago Packing, with wire or duck insertion, made to order. Scraps of Plumbago Packing of our manufac- ture, without wire or duck insertion, may be return- ed to us, and a fair price will be allowed for them. I believe plumbago was also used for cementing bolts and things into concrete or stone.
  19. Nice job with the photos Paul. Looks like we are looking at the potting compound that held a standard disc into the rock. A standard disc would have been a bronze mushroom of which there bazillions pictured in the logs and in the forums. Some enterprising soul prized out the stem that remained and was described.. At an earlier time another soul had broken off the disc and taken it. One nice thing is that there are so many of thesa around that they have very little value. Some jerk has a bronze stem in a box in the garage. Woo hoo. Wonder how big a statue I could cast with the bronze from a thousand of these.
  20. Yes, that's happening here also. Firefox3.0.8, running on XPpro. Also, the Groundspeak server seems to be extremely slow today.
  21. Well, I'll be dipped! Thanks Mike. I just assumed those were Rof W markers from some bygone age. That really makes sense because the one near my house would have been at the entrance of a major federal project, in the 60s.
  22. The tater's a little foggy from spending the winter in Baja, but sign me up. I think I'm ready.
  23. The tater's a little foggy from spending the winter in Baja, but sign me up. I think I'm ready.
  • Create New...