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Show PURE. AIR. '. That pum nlr Is an obsoluto es sential to both life and operation Is k- becoming more known each day. !Tho Minister of Public Works In Franco has lately Issued a decree compelling tho use of respiratory ap-, ap-, parntus In mines. Uy the ruling, every mlno employing 100 men under. i ground at the samo time must provide t portable respiratory upparatus ready for Immediate use und BUlllcIent to J permit a minor to remain la Irresplr- T ablo atmosphoro for at least ono hour. A yoar's tlmo Is allowed each mining I; company In meeting these - require- - : ments which havo been deemed nee- i. essary on account of the unfortunato ' Courriers dlsaBtor or last yenr. Si; To bo Bticcessful, ventilation must . bo positive. Natural means may Wk.,,. . servo at some seasons nnd under BRJtv',- some conditions, but mechanical IHr means are nlways to bo relied upon, BJF Even ton,.tho high seas wliero; tho .WlbMiteiMiHMi,re7;eaUilowifreUiOkoId.tlmoAVann-, lntor funnel Ib giving way to tho compact com-pact and adaptable fan blower A won-dorfully won-dorfully complete Installation wns made on tho recently completed U. S. battleship "Now Hampshire," which Is equipped with no less than 25 electrically-driven fonB of varied types and sizes These nro scattered all over tho ship, being applied for boiler and englnoroom wntllatlou, for renewing re-newing the air lit cnblns, mess rooms and holds; In fact, they havo been placed with thu utmost ease Just 1 where thoy wero wanted. Vitiated air Is not only n menace It tins a tendency to retard good work. Miners, working deep underground, under-ground, their respiration checked by ' , foul nlr, cannot accomplish nearly as much as where tho air Ib pure. Tho normal consumption of nlr by i , n healthy man Is about f.8fi,000 cubic ' - Inches evoiy twenty-four hours. Of this, about 137,200 cubic Inches Is , oxygen, or In other words, ho absorbs tho ozone contained la Unit much oxygen. oxy-gen. Tho ozone amounts to about two grains, with about -soven pounds of v oxygen. Now, If that amount of nlr Is diminished, di-minished, If tho oxygen In tho nlr consumed becomes Iosb, tho lungs be-i be-i come oppressed, tho blood moves sluggishly, nnd there Is u gonernl feeling feel-ing or Incrtln, of lauguldnrss, and In t ' , extreme cnBes, stupor. Theivforo It r'ft-' Is that If a miner does not get tho full amount of nlr required to keep him going that work must Buffer. , OovonimentH and mlne-ownors aro t beginning to rcnllr.o this, aro begin- , nlng to undei'statid that perfect Vontl- ' ,, latlon Is not only a safeguard to pji health, lint Is on Impetus for grenter results by tho workers. |