DENVER & RIO GRANDE WESTERN ROUTE. 
upon waiting cars.*? 
255 
(See Pl. XCV, B.) When the cars are full 
they are drawn away and made up into trains to be sent to the concen- 
trators at Magna and Arthur. 
The side of the canyon in front of 
the traveler is 1,600 feet high, and it is divided into 24 steam-shovel 
levels, on each of which is a railroad track. At present about 60,000 
N. Gerry gives the following ac- 
count of the development of the mines 
at Bingham and the aaa work 
that is now being done ther 
About 25 miles aes of, Salt 
1900 
producing metals valued at 
more than a million dollars a year, and 
that was regarded as a large output. 
1901, to $39,000, in 1915, a to 
$72,000,000 in 1917. In 1918 it fell to 
$62,800,000, in 1919 to $27,900,000, and 
in 1920 to $27,500,000. a spot of 
beauty or a model of cleanliness the 
place is not worth noting, but its 
gigantic cer- 
Be ee: operations are 
tainly impressive. 
The caus i" the first mineral dis- 
covery is unusual, for ore was found 
in sag td soldier “ei ah tp under 
d 
se . Connor, who was statione 
pk Douglas. While rae Indians 
were quietly hunting and the Mormons 
were peacefully pase agriculture 
and irrigation, the soldiers, who were 
from California, were ois in the 
search for minera alt 
famous as a source 0 
siderable placer mining was done about 
1865 in the vicinity of the present 
r se 
pper ore, 
n 1868, was hauled to a station 
Gee tie thace: Be cific Railroad and 
was shipped to Baltimore. Not until 
1878 did railroad connection with the 
outside world give an impetus to 
genuine development. About this time 
changed, hurch began to en- 
ourage the mining industry en 
riod lead mining, 
oxidized zone was being exploited. ;: 
were erected 
mined until pio thie in the price of 
silver in 1893. Thi riod was fol- 
lowed by the development of the heavy 
copper and iron sulphide ore, which is 
a conspicuous ore of the 
per cent of — 30 per cent 
phur, and a few per cent of copper. 
The certs of economically treating 
t was not solved until 1899, when effi- 
cient ee plants were constructed. 
e deepe 
~ de e began to appear, which 
simple free-gold ore and oxidized cop- 
