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Show 213 April Energy I'W k' JJJ'III li J 11 Jill q II 1 V-"- ' ' -- !!; vjf : . (paanap. v " ' r Coal constitutes complex fossil fuel energy resource ,- ' ' irVV V'VS 'vv- - the next rank of coal: subbitu- - Coal is a very complex and diverse energy resource that can vary greatly, even within the same deposit. v' v. P Mr Tninrwm Subbituminous is a combustible fossil fuel mineral formed from the remains of trees, ferns and plants that existed and died during the time of the dinosaurs. A dull black coal with a higher heating value than lig- In general, there are four basic varieties ofcoal. The four varieties are all the result of forces that have altered ' gBo-log-ic plant materials in different 'dtod'AV ways. The varieties ofthe fossil fiiel descended from the first stage m the formation ofcoal: the creation ofpeat or partially decomposed plant material. Pressures and heat from overlying strata caused buried P'H S;X-i- l Wk V , M 9 ' :V- 'JVW :rr ' ; ; ' - - 4 Innovations streamline rescue gear, Improve mining conditions Early coal miners don cumbersome resow equip-before entering the underground shafts, Safety improvements and technological advances have exerted a tremendous impact on the coal 2002 industry, streamlining an underground rescue paratus and improving conditions inside the mines. The innovations have reduced shift crew sizes while increasing safety and productivity. ap-me- nt peat to dry and harden into the first variety of coal - lignite. Lignite is a brownish-blac- k coal with generally high moisture ami ash content along with lower heating value when compared to the other varieties of the fossil fiiel. However; lignite provides an important form of energy for generating electricity; particularly in the American Southwest Under still more pressure and heat from overlying strata, some lignite was changed into nite, subbituminous is used primarily for generating electricity and for space heating. Even greater pressure re- sulted in the creation of bituminous or Boft coal. Bituminous is the type of coal most commonly used for electric power generation in the U.S. Bituminous has a higher heating value than lignite or subbituminous, ' but 1ms than anthrarita. Anthracite was formed from bituminous coal when great pressures developed in folded rock strata during the creation of mountain ranges. Anthracite or hard coal has the highest energy content ofaP typM and is used far space heating and generating electricity. . . Full Service Machining Center Including Mill & Lathe o U Vc C-N- -C SueM7 r7Ifl(rftctaat4mlewftn Service - Qualtiy - Integrity - Experience Hears tk RBIPADR NO TIRE TOO BIG OR TOO SMALL DKKSo ifl Featuring a fall line otthe.besi Complete Machine Shop & Welding Bandag International 435-472-35- 24 Tire 3823 N. 2000 W. Spring Glen www.pricemachinerepair.com after hrs. call 435-472-58- 13 In Radio Dispatched TYucks Re-Headi- ng our own HMMi 24-Ho- ur (435)637-400- (800) ad Plant Emergency Roadside Assistance 6 491-248- 0 200 East Main - Price |