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Page: of 29
Empire Mines Co. listed as 9"" largest producer of silver in California, Mineral Resources of the
United States, 1923, Part I-Metals, page 335
“Nevada County, particularly Grass Valley, during 1923 had the beginning of a small boom. A
number of operators from Nevada took options on several properties and began development.
The North Star mine had a bad year, but the Empire mine produced about as much bullion as
usual. The Idaho Maryland and Brunswick mines were in operation, but the Brunswick did not
remain active long. The Ben Franklin, Golden Center, Alcalde, and Newtown were productive in
a small way.” Mineral Resources of the United States, 1923, Part I-Metals, page 340
“At Nevada City and Grass Valley there was much activity, but labor conditions were not
particularly good, and the turnover was heavy. The North Star and Empire mines produced
regularly, and the Idaho-Maryland began production after a considerable period of Development.
The Julia Ross and Newton mines were reopened.” Mineral Resources of the United States,
1922, Part I-Metals, page 414
California Division of Industrial Safety: Major Disasters in Non-coal Mines, Tunnels and Quarries
in California: April 21, 1921, Fall of rock, 1 killed
California Division of Industrial Safety: Major Disasters in Non-coal Mines, Tunnels and Quarries
in California: May 28, 1920, Fall of rock, 1 killed
North Star-Empire Litigation, “State Minerologist Report” #16, 1919, page 161
“Mine-owners in this district selected G. J. Rector, president of the Nevada County Bank; J. B.
Stapler, superintendent of the Champion mines at Nevada City; and W. E. Wright, secretary of
Nevada City Chamber of Commerce to attend the gold conference at Reno on August 12. A. B.
Foote and G. W. Starr also attended.” Mining & Scientific Press, page 229, 8-17-1918
“Empire Mines Co. has started construction of a tailing-dam. Residue will be prevented from
flowing into Wolf creek by a concrete dam. It is estimated that the canyon will store tailing for 30
years at present rate of milling. Sixty stamps are dropping steadily, and most of the ore is coming
below 4000 feet.” Mining & Scientific Press, page 312, 3-2-1918
California Division of Industrial Safety: Major Disasters in Non-coal Mines, Tunnels and Quarries
in California: February 2, 1919, Shaft accident, 1 killed
“Sharpening and Distributing Drill-Steel” by Howison Crouch (2 page article on system at Empire
mine with photo of drill-sharpening shop) Mining & Scientific Press, page 231, 2-16-1918
“With the 60-stamp Empire mill operating at capacity and 20 stamps dropping at the Pennsylvania
mine, the Empire group is recording the heaviest output of its history and producing in excess of
$100,000 per month. Splendid ore is said to be coming from the 2500-ft. level of the
Pennsylvania and 4600-ft. level of the Empire, with late developments in the deeper workings
particularly encouraging. More than 350 men are on the payroll. George W. Starr is general
manager.” Mining & Scientific Press, page 32, 1-5-1918
“More machine-drills have been placed in commission in the Empire mine and development of
new territory is proceeding below the 4400-ft. level. The 60-stamp mill is running steadily,
crushing old ore from the Empire and Pennsylvania properties. The monthly gold out-put is
reported to approximate $100,000.” Mining & Scientific Press, page, 700, 11-10-1917
“The Empire Mines Co. is installing a 2500-cu. Ft. Ingersoll-Rand compressor of the Rogler type.
It will be driven by a 500-h.p. motor. At present 100 drills are in operation, and it is probable that
20 to 30 more will be added. Development below the 4600-ft. level continues to uncover ore of