Text 35988, 94 rader
Skriven 2010-03-19 06:06:00 av DAVE DRUM (1:261/1381)
     Kommentar till en text av JIM WELLER
Ärende: Re: Mercury
===================
-=> JIM WELLER wrote to DAVE DRUM <=-

 GJ> Mercury used for leaching gold out of concentrates

 JW> I don't think any of the commercial operations do that anymore. It
 JW> is expensive and inefficient compared to using cyanide.

 DD> Back in the day mercury was used by prospectors as it was easy to
 DD> carry, use and (somewhat) recover in the field.

 JW> True. And one man operations still do that in the third world as the
 JW> initial capital required to set up is minimal. But commercial
 JW> operations in North America haven't done that for over a century.
 JW> The mercury method doesn't extract as much of the total available
 JW> gold as a cyanide leach.

 JW> Also in a large scale operation mercury is far more expensive a
 JW> consumable than cyanide.

I *did* say prospectors not mega-corps. Does cyanide (if you know) extract
silver and platinum, too? Mercury does, although I have no information on the
efficacy.
 
 JW> In the old days if a successful prospector couldn't find a backer to
 JW> finance a mill he would high grade the best vein and use mercury
 JW> to get enough gold to "make the nut" on a proper operation. The
 JW> tailings would then be re-processed to extract the rest of the gold.

There are companies (a couple of them, anyway) doing OK even in these days of
sinking gold prices (yesterday's U$D1121/oz - CAD1141/oz) by reprocessing
tailings dumps on abandoned mining properties. One company is currently
fighting with preservation extremists in/near Central City, CO - mostly because
their equipment is "too modern looking" and doesn't fit the retro-look that the
people who prey on the tourist trade want to maintain.

MMMMM----- Recipe via Meal-Master (tm) v8.06
 
      Title: Silver Thread Stirred Eggs
 Categories: Oriental, Eggs, Pork
      Yield: 4 servings
 
      2 oz Dried bean threads
      4 md Dried mushrooms
      2 ts Soy sauce
      6 lg Eggs
    1/2 ts Salt
    1/8 ts White pepper
      2 tb Salad oil
      1 cl Garlic; minced
      4 oz Cooked ham; in matchsticks
      1    Rib celery; thin sliced
    1/4 c  Sliced bamboo shoots
      2    Whole green onions; thin
           - sliced
 
  Cover bean threads with warm water and let stand for
  30 minutes. Drain, then place on a cutting board and
  cut in 4 inch lengths. Cover mushrooms with 3/4 c
  warm water and let stand for 30 minutes. Remove
  mushrooms from water, then pour off 1/2 c of water
  into a bowl and discard mushroom stems; squeeze
  mushrooms dry and slice thinly.

  In a bowl, beat eggs with salt and pepper. Heat a
  wok or wide frying pan over high heat. When pan is
  hot, add oil. When oil begins to heat, add garlic.
  Stir once, then add ham and mushrooms and stir fry
  for one minute. Add celery and bamboo shoots and stir
  fry for 2 minutes. Add bean threads and mushroom water
  and cook until liquid is absorbed. Add green onion and
  cook for 30 seconds.

  Reduce heat to medium. Pour eggs into pan. Turning
  occasionally with a wide spatula, cook eggs until
  they are soft and creamy.
 
  From: http://www.recipesource.com

  Uncle Dirty Dave's Archives

MMMMM



ENJOY!!!

From Uncle Dirty Dave's Kitchen
Home of YAHOOOOAHHHH Hot Sauce & Hardin Cider 

 

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