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Updated: May 19, 2025
The Norfolk fine Sand and Norfolk Sandy Loam of the U.S. soil survey, are types of such soil. These soils absorb the droppings readily and are never covered with standing water. The winter snows do not stay on them. Crops will keep greener on them in winter than on clay soils three hundred miles farther south. The disadvantage of such soils is that they lose their fertility by leaching.
The cotton-grower who sells cotton lint at 10 cents a pound and the market gardener who sells from $100 to $300 worth of fruits and vegetables from one acre may well make liberal use of commercial nitrogen at 15 or 20 cents a pound; but if after deducting the cost of harvesting, threshing, storing and marketing the average farmer receives only 1 cent a pound for his grain and if 40 per cent of the commercial nitrogen applied is lost by leaching, then the total crop of grain would bring only enough money to pay for the nitrogen required to produce it, at 20 cents a pound.
The leaching drains may safely begin at a distance of even ten feet from the back of the house, requiring for the whole a clear area of only fifty feet by sixty feet. With small households, the length of drain may be very much shortened. In my own case, where water-closets are not used, the total length of irrigation drain is, as before stated, only two hundred feet.
Optimists brought up investor resistance to heap leaching, an extraction method that had made fortunes in the 80's. Several mutual funds bought big positions after sending their mining aces to investigate first hand. The price was beginning to rise on larger volume. The day after Joe had lunch with Mo, he bought 1500 shares of SPM at $4.75. The next morning, the price was $5.75 bid / $5.94 asked.
Between these blocks of sedimentary rocks oozed up through the lines of fracture quantities of fused material, which also sometimes formed mountain chains; and it is possible and even probable that the rocks composing the volcanic ridges are but phases of the same materials that form the sedimentary chains There is, therefore, no a priori reason why the leaching of one group should furnish more ore than the other; but, as a matter of fact, the unfused sediments are much the richer in ore deposits.
In nearly all these localities we may find evidence not only that the ore deposits have not been derived from the leaching of igneous rocks, but also that they have not come from those of any kind which form the walls of the veins.
In the leaching and rearrangement of the ore bodies, nothing would be more natural than that accumulations in one place should be attended by the formation of cavities elsewhere. Both are opened to the depth of seven hundred feet with no signs of change or exhaustion.
"The solution of double cyanide of gold, silver, and potassium, which has been drained from the leaching vats, is passed over the mercury in the precipitating 'box' when the decomposition of the electrolyte by the electric current is being accomplished, the gold and silver are set free and unite with the mercury, and are also deposited on the plates or discs of copper, forming amalgam, which is collected and made marketable by the well known and tried methods.
Add 10 or 12 drops of aqua ammonia to each barrel, after leaching through the peaches; with age this is nearly, if not quite, equal to whiskey made from rye.
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