Show ij s V T x 7 v R N P 0 06 MY W P 2 1 X y R v 4 p szn A S YOUR COPY of better ventilation lower production R alyk costs our splendid mv xyth new book L is now ready any superintendent mine owner or manager who wishes to keep abreast of the times should send us their name and address and it will be forwarded to them at once free this book gives absolute proof of how you can increase increase your labor efficiency how you can lower your production cost how you can increase your production product iL how you can c cut ut the cost of your labor all of which you can accomplish with the aid ot ol LEX patented jan 2 1917 Other patents pending tubing is fast replacing metal tubing and is rapidly rapid ly being installed in mines that have heretofore depended on other artificial or natural means 0 of f ventilation it is low in in co cost st compact and light in weight one man can carry one hundred feet of it and install it in three minutes time without any special tools is a an n impregnated canvas tubing absolutely air tight acid and water proof made in 25 50 and foot lengths 8 12 16 and 24 inch diameters our book better ventilation lower production costs contains a world of 0 valuable valuably e information tor for every mine operator send tor for your copy today BEMIS E M I 1 S BRO B R 0 BAG CO selling agencies in principal cities and mining camps of the world 1112 poplar st established 1858 st louis U S A |