Bisbee daily review., 1908-05-03
SUPERIOR 8 P|TTSBURG
 MADE IMPROVEMENT
Of Great Extent at Their Properties in the Warren
 District During Year

During the past year there was in
 stalled at the Cole shaft of the Su-
 perior and Pittsburg company, a If
 and by 12 Prescott sinking pump, on the 1,300-ft. level to throw the
 water to the 1,100-ft- level in order
 to break the lift for the No. g Cam
 eron sinker in the shaft below the
 l40O-ft level. .f..
 From the Briggs shaft there was
 removed one marine boiler to the
 Junction mine, leaving seven 25O-h. p.
 boilers now in the Briggs battery.
 There was removed also: One If and 16 and 10 by 16 Sullivan straight line
 compressor to the Leadville explora-
 ton; and one 14 and 16 and 10 by 16
 Sullivan straight line compressor U the Pima district explorations. Upon
 starting the Briggs there was in-
 stalled: One Is and IS and II by 1o
 Sullivan straight line compressor to
 take the place of the two machines formerly in use. There was also re moved: One 16 and 30 and 14R by 24 Prescott, Mesabe type, compound pump, which was later installed on the 1,200-ft. level of the Hoatson shaft.
 At the Hoatson shaft was installed two 72-in. by fS-in. 15O h. D., 135 lbs. horizontal tubular boilers, which
 were removed from the Junction bat | tery. This makes six boilers in the
 Hoatson battery. One 16 and 30 and 141k by 25 Mesabe type, compound pump, taken from the Briggs sna1c, and one 15 and 23 and 39 and 141a by 24 Prescott Mesabe type, triple
 pump, which was new. These pumps are installed on the 1200-level, and 1 throw the water to the 1O0OleYel
 where it runs through a launder to | the Junction 1000-ft. level pumping l plant. There was also installed at | the Hoatson shaft one additional | sinking pump (Prescott). On sur l face there were installed one new l saw mill complete. which is an exact | duplicate of the Oliver plant and con- | tains one timber framer, one 42-in. l cutoff saw. and one 24-in. rip saw. l All driven by one 30-h- D., 440-vUa,, | 6O-cycle. 3-phase motor, current for | which is supplied by two 15-kw., ?, 2,200-volt, 440-voIt transformers from
 the Oliver plant.
 At the Junction shaft there were in stalled on surface one 250-h. D., ma rine boiler from the Briggs shaft, four new 2S0-h. D., 160 lbs pressure, marine boilers, and one and IS asso
 41s by IS potform mine pump From the Oliver for a boiler feed pump. There was removed from this shaft | three 15Gh. D., 135 lbs. pressure, hor' izontal tubular boilers, two of wnlch
 were installed at the HOatson.
 The rest of the boilers at the Hoat'
 son are of this type,and on account of the difference in pressure, these boilers could not be used to adYan' tage in connection with the JuncUon plant. There are still three boilers of this type in the Junction boiler house, but they do not afford mucl advantage. because of the fact tna' . it is necessary to reduce the pressure of the entire plant when these DU1i
 CTS are put in use.
 The wooden head frame which i' at the Hoatson shaft is hardly aoe quate at the present time on account of the large amount of materla which is being handled and it
 doubtless be necessary in the neal ! future to construct a new shat l house, preferably of steel.
 With the exception of nlUT' 2 economical compressor plant to tHf , nish air for the Junction, HOatsUl and Briggs shafts, the mine is lIoT 2 splendidIy equipped with machinery