E/MJ : engineering and mining journal . nected up and ,.-t 2—Test the flexible tubes as shown in Pig. 2. Tesl3—Using tubes tested in tesl 2, tesl the bag as shown inFigs. 3 and 4. In tests 2 and 3 inflation can be obtainedfrom the lungs or a small pump. Test 4—Test the en-tire back of the apparatus as shown in 1 If a leak is indicated, il is advisable to removipotash cartridge and insert tl plug E, shown in Fig. 6. It consists of two bell-shaped cups connected bja pipe fitted with a stop-cock. While the valves al Iand bottom of the potash cartridges are shut when thepartridge is remo
E/MJ : engineering and mining journal . nected up and ,.-t 2—Test the flexible tubes as shown in Pig. 2. Tesl3—Using tubes tested in tesl 2, tesl the bag as shown inFigs. 3 and 4. In tests 2 and 3 inflation can be obtainedfrom the lungs or a small pump. Test 4—Test the en-tire back of the apparatus as shown in 1 If a leak is indicated, il is advisable to removipotash cartridge and insert tl plug E, shown in Fig. 6. It consists of two bell-shaped cups connected bja pipe fitted with a stop-cock. While the valves al Iand bottom of the potash cartridges are shut when thepartridge is removed, they do not close tight enough forThis test. Test 5—Test both circulation pipes, as shown in ITi i 6—Using tested circulation pipes, teslpart- by closii the • described abo entire hack pari- M : I1- open. using test When a leak ha caD usually be found by feeling with a dam - finger. I immersed in water. ! aratus if made monthly, will maintain it in excellent condiIn case of actual rescue work, the testing of the entire. 7. PROVING CIRCU-LATION PIPES appan if desired, the us and the injector can bi I course those ju-t described. N©s?tnwest Mining Associationon Mining Law Revision The Mining and Mets ite re\ ision of th i aizations of mining men and found a ready andhearty response. In thi I illize the opinion of mining men into approve! pies I I de- tailed it, ised law, the so ques- tionnaire to it- own members andlion-. This questionnaire was published in the EngiiiH/ and Mining J Oct. 14, 1916. In this questionnaire, the iMinme Assoi iation adopted the following Whereas, It is generally understood and agreed In mining t our Fedi ill mining lava has bi try to th-- welfare of the mining Industry of Whereas, [I Is the belie! ol the members of the Northwest Minum Association that any new I,- that mav should a >e. offering • to those wishing to prospect for mines toand guarding only against fraudulenttions of public lands for purposes other than those pe
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
