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  1. PBroad

    looking for non permeable "geotextile"

    You don't want a geotextile all of which are permeable but rather a multiply laminate: Try Griffolyn in Houston TX if you are in that area. http://www.barker.com/products/index.html?category=0&subcategory=26&product=426
  2. PBroad

    Ni Resist or 12% Cr for Pumps Material with brackish water?

    If cost is the primary consideration why not use a peristaltic hose pump, its 100% lined
  3. PBroad

    Keeping up with Paperwork

    Has anyone got a good way to beat the pencil pushers. I believe that the Duke of Wellington was half right when he wrole to the Foreign Office in 1812, but since then Bureaurcrats seem to be regaining superiority http://www.cns.gatech.edu/CNS/GTaccountProcs.pdf
  4. PBroad

    Educated" opinions on climate change - Part 4

    Regarding climate change, perhaps we should go back a year or two: W.E. Deming the Engineer who revitalised Japan said "It is not necessary to change. Survival is not mandatory",
  5. PBroad

    Isolation valves in hydrometallurgy

    Isolation valves are normally knifegate valves of a non-corosive material. Contact www.bray.ca in Canada, probably other links attached or clarkson
  6. PBroad

    Hazard of Sourcing to China

    When one spends $10,000,000,000/day on an off-shore army made up to a large extent of reserve soldiers who are thus removed from the workplace will throw any economy for a loop. To retain that economy at the expense of its trading partners will throw the world finances into a loop. As regards...
  7. PBroad

    Overhead Railway History

    Have just found an interesting link to the Liverpool Overhead railway. http://www.subbrit.org.uk/sb-sites/sites/l/liverpool_overhead_railway/index.shtml Do others have any links to elevated railways/railroads
  8. PBroad

    Current Financial Mess

    SEC Chairman Chris Cox allowed naked short selling ever since he took up the position in 2005, as have all others before him despite the fact that naked shorting is illegal. This was probably "necessary" to raise cash to offset the money drain in Iraq, which was also illegal. But then the US...
  9. PBroad

    Scares - Taking science out of proportion

    A popular TV ad claims that their coffee "has removed the caffine and chemicals to leave the natural flavor"! When I went to school water (pure H2O) was a chemical, so what is the Ad telling me!
  10. PBroad

    metal property sources

    Having to convert US standards to European ones, one of the best webs I've found is http://www.key-to-metals.com/
  11. PBroad

    Bolts vs Screws

    One thing is certain if it's desribed as a "Self-locking Internal Wrenching Nut" in a US Military catalogue you can expect to pay 100 times the hardware store price. http://www.usmilitaryfasteners.com/nas-fasteners.htm
  12. PBroad

    Increasing Education Requirements

    By "Cesspool" I guess you mean one full of BS graduates. Well MS stands for "More of the same" and PhD stands for "Piled higher and deeper"
  13. PBroad

    Using an Old Tailings Dam to Build a New Tailings Area

    Given the unknown foundations and potential weak spots I'd suggest hydraulically slucing the old dam, using water cannon and building a new dam. if the old dam is coarser than your new tailings then I would agree with placing the old tailings via spigots or cyclones to build the new dam walls.
  14. PBroad

    Vacuum Pump Recomendations

    A word of caution: when sizing the pipeline to a vacuum pump double the water (liquid) flow to get the correct pipe size, most people forget that the air has to move too. Using regular water flow rules at 6ft/sec will choke a vacuum pump.
  15. PBroad

    History of the milling machine

    Henry Maudslay born August 22, 1771, died 1831 UK mechanical engineer and "father of the machine-tool industry". His father was a mechanic in the Royal Arsenal at Woolwich and at 12 Henry was hired as a "powder monkey", filling cartridges with gun-powder. He left at 18, to work for Joseph...
  16. PBroad

    Floating process

    The first step is to grind it fine enough to seperate the mineral to be recovered from the waste (gangue). You then want to make the mineral hydrophobic (repelled away from water) and add air so that the minerals have something to attach to when they are repelled. This will also lift them out...
  17. PBroad

    'Educated' opinions on climate change

    The planet is enjoying more mild and balmy temperatures, and the ice caps around the south pole had been diminishing for three summers in a row. So says Habibullo Abdussamatov, head of space research at St. Petersburg's Pulkovo Astronomical Observatory in Russia. However, he is not talking...
  18. PBroad

    Can someone Identify BS L65?

    Try Metal Resource directory, if it's not there there should be a link http://www.metalresourcesdirectory.com/top_rated.php
  19. PBroad

    Landfill Gas Extraction

    I don't know of any good "books" but you may want to contact the University of Calgary (in Canada) or see http://www.schulich.ucalgary.ca/resrch_civil/publications/Evolution-of-Landfill-Technology_SA%20Context.ppt
  20. PBroad

    Plant Demolition

    You may want to check Demolition Engineering which falls under Military Engineers

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