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  1. jacare

    Cost of Backfilling using Tailings

    Does anyone have recent costs utilizing methods for backfilling drifts, stopes, etc. For example, the use of cementitous tailings materials as part of a mine closure program. Thanks
  2. jacare

    Large fill alternatives

    A small company called MineSeal, LLC mfgs and installs a polyurethane foam sealant to close hazardous mine openings and construction cavities. Their product is not in foam blocks, but rather, the material comes in portable boxes (1 cu yd) or in bulk (buckets & barrels). I know their material has...
  3. jacare

    mine adit plug

    I am looking for a well-designed concrete plug for a draining mine adit. My plans are to "sandwich" the concrete in a acid-resistant polyurethane foam blanket due to the very low pH of the draining water.
  4. jacare

    PUF

    Did you ever find the info you were looking for concerning PUF?
  5. jacare

    sonic drilling

    Anyone out there with experience in sampling a gold placer using a sonic drill? My concern is the effectiveness of sample recovery, especially if the gold particles are very fine. Thanx
  6. jacare

    Portable drill rig

    Evaluating a mine tailings deposit in Brazil at an isolated site. Need portable drill rig capable of punching through tailings deposit & sometimes water pockets to recover sample at 30m depth. I've heard that GeoProbe works well. Can't find one locally, anything else? thanx jacare
  7. jacare

    PUF

    In response to your questions regarding PUF (polyurethane foam). The former US Bureau of mines has written articles about PUF and the Colorado School of Mines actually applied tests to demonstrate its use in mining. I have used PUF-Seal (brand name) for a number of years now to close abandoned...
  8. jacare

    evaluating large gold in samples

    Mtn States R&D Int'l, Inc. Tucson, AZ Must be nice!
  9. jacare

    Ice Clogging Drilled Holes

    Use polyurethane foam (PUF) which comes in portable bags & can be mixed on-site by hand rapidly. The PUF plug is insulating and can be drilled thru rapidly. Contact MineSeal, LLC (www.mine-seal.com).
  10. jacare

    Polyurethane Foam (PUF) use other than mine closures

    The use of polyurethane foam (PUF)in sealing abandoned mine shafts and adits is now becoming common among govt agencies and mining companies. Has anyone out there used PUF as a light-weight substitute backfill behind retaining walls or in other mining or construction related uses? It seems to me...

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