Arizona republican., 1920-11-10
RESCUE APPARATUS . FUR MINE DISASTERS
 ISFEITURE \! FAIR

Noteworthy among the many and varied exhibits at the state fair Is the display of mine rescue apparatus and ventilation equipment of the United States bureau of mines, located in the south end of the mines building. Here may be seen the latest devices for fighting mine fires, locating and res> cuing entombed men, as well aS<& whole row of kewpie doll victims. each treated for some specific injury and illustrating the application of first aid as practiced by the experts of the governments mine rescue organiza- ton.
 The exhibit. which is made possible by the visit to Phoenix this week of the bureau of mines rescue car. is full of interest. not only to the practical mining man, but to the lay public as well For here may be seen nor only the various types of oxygen apparatus used for working in gas-fiiled stopes- but each day at noon there is staged an actual explosion and mine rescue. The room is darkened and an explo- sion takes place in the 'mine.' Fol- l lowin gthe burst of flame and smoke | that represent the explosion, rescue workers. equipped with the oxygen | apparatus. enter the mine, rescue an entombed man and. after bringing him l out. administer first aid treatment ia
 
 hlbition. in which actual rescue con- ditions are accurately reproduced. will l take place at fC~n today and each suc- | cecdmg day of tie foir.
 Three types of oxygen breathing ap- paratus are on display in the exhibit: 1 the Fleuss. the Gibbs and the Paul Although differing in some details. these peculiar looking devices are all designed with the same end in view that of permitting mine rescue work CTS to work safely in gas Each type contains sufficient oxygen to allow ths worker to remain underground for two hours.
 One of the most interesting instru- ments on display. and one the inven- ton of which grew out of the war. is a geophone.f With this apparently simple, but extremely delicate, instru- mcrt, it is possible to locate ento1nbed men through listening for tapping or sounds made by them underground. ; With a geophone men can be heard at the seemingly incredible depth of 5000 feet from the surface. The device is , an invention made by the bureau of mines.
 Another interesting and delicate ira- strument used in mine rescue work is the anemometer. used to measure the velocity of air currents in mine passages. Then there is on display the canary cage, in which canary birds are used to determine the presence of carbon -dioxide and other noxious gases in smoke-fil1ed stopes. 4 com plete exhibit of safety lamps, both carbide and electric cap lamps, is also on display.
 The bureau of mines car, which is parked just opposite the freight depot of the Arizona Eastern. will be oper to the public Friday morning from { until II o'clock. The car is in charge of E. D. Gardner. mining engineer Other members of the bureau of mine. crew with the car and in charge of the exhibit at the fair grounds are I Fl Mclaughlin, first aid miner: R. B Donovan, foreman miner, and Paul " Sharp, clerk. MT. Mclaughlin, wh, formerly lived at Jerome, is amonl those in charge at the fair grounds.
 B. 0. Pickard. district mining engi- neer in charge of the south Pacific coast district. which embraces Ari zona. Nevada and California, arrives in Phoenix yesterday and will be her throughout the rest of the week. Lr Ptckard was formerly connected witt
 the state land commission, reavinv
 here in 1917 to take a position wit the bureau of mines at Washington
 His headquarters. for the past yea
 have been at Berkeley, Cal.