Coal mining in Illinois . , V,VI, VII, VIII Through 2yThrough 2Through V/2Through \yOver 1; through 1^4Through \l/% F. C. Lincoln in Bulletin No. 69, Coal Washing in Illinois,Engineering Experiment Station, University of Illinois, says 204 COAL MINING INVESTIGATIONS tj^ariatf EmmI \ *&? j§ jmBKt* jf MpwXT^ J \ ***€ ~~~M § >#* .m - ?W Fig. 63. Equipment for preparation at local mine. (From unpublished reportby Prof. E. A. Holbrook.) that no two washeries in Illinois make washed coals of exactlythe same sizes. The range in inches is as follows: No. 1 No. 1 No. 2 No. 2 No. 3 No. 4 No. 5extra e
Coal mining in Illinois . , V,VI, VII, VIII Through 2yThrough 2Through V/2Through \yOver 1; through 1^4Through \l/% F. C. Lincoln in Bulletin No. 69, Coal Washing in Illinois,Engineering Experiment Station, University of Illinois, says 204 COAL MINING INVESTIGATIONS tj^ariatf EmmI \ *&? j§ jmBKt* jf MpwXT^ J \ ***€ ~~~M § >#* .m - ?W Fig. 63. Equipment for preparation at local mine. (From unpublished reportby Prof. E. A. Holbrook.) that no two washeries in Illinois make washed coals of exactlythe same sizes. The range in inches is as follows: No. 1 No. 1 No. 2 No. 2 No. 3 No. 4 No. 5extra extra Always over . 354 2/2 3/2 m 2% 13/8 2yA 1/2 0 The impurities in the coal which are shale, fireclay, andnodules of pyrites, are separated as far as possible at theface. Where fireclay is shot up with the coal the separationunderground is comparatively easy on account of the contrastin color. A further picking is made at many mines on thescreen and car; six pickers being employed at some Fig. 64. Tipple designed for local trade and shipping S3ipUl J^ \ .13AOJO 1U30 13C] PREPARATION OF COAL c Uf u in u O O <j Uh ^ ^ ^ »-; j: x\ ^ js C S3 C <3 ^ ^ -£ S pq *3 i u u u. W U D 1) -C J3 J3 JH ^ S3 ° oc o X X On • o\ 1 }OOJ jad saipui llOJJBUipUJ f^fO^fOfOfOfO^ CO CO m*s»-^f- pid 03 rt rt C« c: rt a3 rt rt rt a pd .-; rt rt a3 03 a3 A C/3 CO C/2 C/3 CO CO CO CO CO C/5 CO CO CO CO c/: ?CO o CO £ JD J3 £ J j2 EEEEEEE^EH H H H H H P co H <U G <U CO ^ J3 ,Q _ £ £ E E <U <U CJ - ^3 ^2 Xi £ E E E HHHH h /, h H h o c55 S ^M^rfiO\0N0C0\O^ $! t§ o6 206 COAL MINING INVESTIGATIONS saqoui Yxi J3AO;nd;no ib}oj JO }
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcoalmin, bookyear1915
