What we do need is a knowledge of coal's elemental analysis. In other words, we need to know only how much carbon, hydrogen, sulfur, oxygen and nitrogen there is in a given coal. A typical elemental analysis of a bituminous coal is as follows: 82% carbon, 5% hydrogen, 1% nitrogen, 3% sulfur, 9% oxygen.
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Drill Bits & Driving Tools. Drill bits and driving tools help hand tools and power tools work together, especially important for the variety of drilling tasks that get done in woodworking. We are always on the lookout for unique and useful hand drills and power drills, screwdrivers and socket sets, or a handy gadget that will help you become a better woodworker.