I remember my dad bought a new house in the suburbs with a spot in the parkway where no matter what he did, the grass always turned brown. Finally he went to dig it up and discovered they had laid sod over a manhole cover.
I’m not saying there was a layer of dirt over the manhole, it was directly under the sod. Only metal detector required was a shovel. From: AF <af-boun...@af.afmug.com> On Behalf Of ch...@wbmfg.com Sent: Thursday, October 1, 2020 1:45 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] OT metal detectors I am guessing it is magnetic detector. He uses it to find manhole covers that have been paved over and valve bodies. From: Carl Peterson Sent: Thursday, October 1, 2020 12:25 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] OT metal detectors Was it a metal detector or a magnetic locator? The former can only detect down ~12" max. the latter can detect pretty deep depending on the size of the object. I'd guess a drill head could be found 6-10' down. https://www.engineersupply.com/Schonstedt-Underground-Locators-Explained.aspx#:~:text=Magnetic%20Locators,-You'll%20need <https://www.engineersupply.com/Schonstedt-Underground-Locators-Explained.aspx#:~:text=Magnetic%20Locators,-You'll%20need&text=A%20surveying%20nail%20you%20can,materials%20are%20not%20considered%20ferrous> &text=A%20surveying%20nail%20you%20can,materials%20are%20not%20considered%20ferrous. On Wed, Sep 30, 2020 at 8:08 AM Chuck McCown <ch...@wbmfg.com <mailto:ch...@wbmfg.com> > wrote: They say GPR will not work in our soil. Sent from my iPhone On Sep 30, 2020, at 6:29 AM, Louis Arsenault <lo...@ntinet.com <mailto:lo...@ntinet.com> > wrote: Our water guys can barely find the valves on top of the ground and to find anything under the ground they use a poking stick until it hits something then draw a blue line. This is why we use a GPR to find the water lines but it will pick up almost all the utilities. We use one of these. https://www.pine-environmental.com/collections/ground-penetrating-radar-gpr/products/mala_easy_locator_offroad On Tue, Sep 29, 2020 at 5:51 PM <ch...@wbmfg.com <mailto:ch...@wbmfg.com> > wrote: Had a drill rod break today. The guys did not know where the end was because the sonde went to sleep on them. Had the local water guy go over with his metal detector and help them find it. I am going to ask him what kind he has. Anyone here use them? Any opinions? -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- -Louis NTInet O: 803-533-1660 X 207 C: 803-997-0004 -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Carl Peterson PORT NETWORKS 401 E Pratt St, Ste 2553 Baltimore, MD 21202 (410) 637-3707 _____ -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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