Bisbee daily review., 1909-01-14
MISCELLANEOUS INFORMATION
(M ming Science.l

Of t1ge new smelling combine au- thorized S50,001, 900 capital stock. it
 s understood that $2O .00O. 900 will be issued i7 the near future, and has been underwritten
 Dur Rg C fri five yesrs # t.1e United States patent office. the aver oge numDzr of patents issued per
 ar was below 20, wEi,e during ;he
 t rs it has averaged 30,- 00OO annually
 e~s n-Har. gold mine las late ir been discovered from which ore has been taken that contained 200 zs. Cf pure gold per ton of 2.O00 lb7. This is in the old gold mining region of Chile.
 As illustrating the importance of
 he Sudbury (Ont) copper and nicke, industry. it may be ment oned that, in 1907, 359, orc snort tons of ore were smelted. ard the shipments of matte containe 6,996 tons of copper and 0.095 tens of nickel
 Dur ng the first months of 1908, there were 2I,I0S,115 Spanish qun- .als of nitrate exported from Chiie, against 16.3S2,2l1 qu ntas fer the 'ame period dur ng 1907, showing gain of i,725.9O4 qu ntals for the 6
 mon hs A Spanish quintai equals 101 61 lbs.
 Several of the large copper inter ests are not in sympathy with the movement to make public, stat sites bearing upon copper product on- They nave expressed their detsrm nation ohCld aloof from any movement Of this sort on the grounds that such sta
 stics would be of no benef to the rade.
 It is an acknowledged fact that the
 der the mine, the more dangerous it
 CD far as eVp'Osions are concerned. This is especially true where mines penetrate the earth to a cons 'derabie | depth. and it does not matter whether
 the coal is reached by drift. slope or
 shaft opening,the results are the same.
 It is so very easy to make fire and obtain heat that people seem to they want that is all that is necessary. They do not for a momelt stop to think of the cost of the heat, nor do ! they consider what amount of hea.
 is utilized. and what amount is | Ne2StSQ lO bt 5Hi e. lcil Ec SAcs-4h l plants are beginning to take up this
 matter. but in most cases it s only
 in a half hearted way.
 Consul Neal McMillan of Sarnia. l sends a Canad an newspaper account of the electrifIcation of the St. Clair | river railroad tunnel, wh oh has been | ccomplished at a cost of S1,000.000,
 ard formally inaugurated the middle
 of September. The consul terms \
 the most important eng 'neering
 achievement in electric transportation being the longest sub-mar ne tunne'
 in the world Each electric locomo- ! i've s of 750 h. D.
 The men who arc engaged in oper- gtipg machine drills ara gr atly ex
 posed to dust In drilling in hard
 rock, espscia ly hcrizonta ho es and
 ''uppers," a very large amount of fine dust is gwen off from tha hoes, and th's dust remains suspended in the air for a cons derable time. so that | the men operating the drill are con tantly inhaling it. Quite apart from ny tests. one las o1y t. observe
 how quickly the clothing. the wal s nd in fact every object unGe rgrcund. | becomes cOyf red with dust 10 real ze
 how great must be the quantity in haled- Estimations of the anu ! lust present in tae ar in the ne'gh- boraood of rock drilling mach mes | how that there is commonly as much IS 14 mg. per cu- 1t. when boring up- pers. As a man breath-s about 11 GU