The 1991 eruption of Mt Pinatubo in the Phillipines ejected over 10 billion tons of magma and 22 million tons of sulphur dioxide plus vast quantities of minerals and metals contained in an aerosol cloud which it injected into the stratosphere and covered the entire globe. It amounted to more toxic pollutants than man has caused man's history on earth. All it did was give us nice pretty sunsets for about three years. Mt Pinatubo, as large an eruption as it was, was exceeded in volume by the eruption of Krakatoa in 1883. And then there was Novarupta in 1912. That was larger than Pinatubo, or, 30 times the size of the Mt St Helens eruption. There have been hundreds, probably thousands, of these eruptions in earth's history. For mere men to think they are equal to these collossal natural events is folly.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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