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Caption: Booklet - One Hundred Million (Impact of UI) (1931)
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most the ults id ' ' " •» n n . nam ill va' ' \ ,,mh oi 'I minii | ' ll1 ! was I un in 1911. I hi ' "' h«* studi< wei ublish I in 1 I I ! ulnar) bulletin in 191 Menl m v I n „ ( in district tnd in mam ilt< in individual mines or in entire district hich 1t n. n\h better operation but to th< bun n I Inv< ligations in the subsiden r lov t! mined areas, and in mining methods have had an influx i prom • inc a larger percentage i extraction f the i tin r lucir. th< loss of coal left in the ground. Studies of haulage, hoistin \ r and ventilate pointed the way to improvements in mining pi 1a n n the C St oi coal production. l th Much work has b< n done on the utili n f Illinois ( 1 in w rk for which outside < als are nerall) u I. Such tud 1 the manufacture o\ retort c il ml v r the king « I Illinois c lis, the purification f is, and pre] > id i n of tar and its derivatives. For nearly 20 wars special attention h n given '•• the I'ni versity to the preparation of ( al. Tin m\ >ti ttions h:v n\ Ived studies of coal washing methods, dr\ prepai ti< n meth< the currence and distribution of sulphur in th I, and the :: bility crumbling characteristic) of Illinois i \ tudy the v ability of Illinois coals just published will r\« to J «n pani who are interested in the results that may 1 btained by il washing. A letter from one in the industry stat 1 find it I I the nmst comprehensive publication that it has ' n m ire t receive. Ii will, m loubt, b< i greal benefil l indu i rally." The work that was perhaps of moi i xtend I publi intei st than any other \ is thai on the storage of bituminoui .1 Ml th< « Id t0 m,M I'l" '"' I in the bulletins and pa| that deal « h thi nl There can be no doubt that .nam the i id« ntained '" "" publications have b n widel) foil nil ,lh ""' " '" '" torage i ,1 but in th< as „,. ,h, nd monetai I. can I b) fir< ,, s t 0 l , . , i . « of i .. Known Conl m ltion " " '" ""' bustion ol Hiiro ine " Performance characteristi. dctcrmin by . 1 , I I Boilrl Us .,i„i
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