520 MINERALS YEARBOOK, 1967 
 
Table 4.—Employment and injury experience in the mineral industries

Year and industry 
Average 
men 
working 
daily 
Days 
Active 
Man-days 
worked 
(thousands) 
Man-hours 
worked 
(thousands) 
Number of Injury rates per injuries million man-hours 
——--—         Fatal Nonfatal Frequency Severity 
 
1966: 
Metal          
Nonmetal and peat 
Sand and graveL 
Stone           
Total '         
1967:" 
Metal           
Nonmetal and peat 
Sand and graveL_ 
Stone           
Total 1           
2,123 
758 
648 
220 
299 
253 
204 
248 
635 
192 
132 
55 
5,124 
1,547 
1,056 
436 
 2 146 
- - - - 35 20 5 
 28.88 3,564 22.62 1,323 18.94 696 11.47 459 
 
3,749 
270 
1,013 
8,164 
2 206 
25.48 2,603 
 
NA 
720 
685 
320 
NA 
255 
219 
245 
467 
183 
150 
79 
3,735 
1,468 
1,187 
634 
2 991 44 20 10 
27.04 4,03530.66 4,60116.84 44215.78 393 
 
NA 
NA 
880 
7,024 
3 173 
25.06 3,218 
 Preliminary. NA Not available. 
1 Data may not add to totals shown because of independent rounding. 
 
Consumption, Trade, and Markets.—All 
of Nevada's metal requirements, all of its mineral fuels except some fuel
oil produced at a small topping plant at the State's only oilfleld, and virtually
all of its nonmetallic mineral needs other than construction materials were
supplied from out-of-State sources. All of the talc and fluorspar, most of
the barite and perlite, and some of the gypsum and limestone were shipped
out of the State in crude form. Much of the lime output went to customers
in neighboring States. With few exceptions, metal ores, concentrates, and
precipitates were processed and smelted outside the State. Nevada's only
smelter (copper) was dependent on Nevada ores. All usable iron ore was exported
or shipped to steel plants in other states. The tungsten carbide plant, Kennametal,
Inc., Mineral County, used concentrates purchased from producers in Arizona,
California, Idaho, Montana, Nevada, Texas, and Utah. In Clark County, Titanium
Metals Corporation of America produced titanium sponge from titanium minerals
imported from Australia and the American Potash & Chemical Corp. electrolytic
manganese dioxide plant operated on ore purchased from out-of-State producers.

 
 Trends and Developments.—Exploration for metals and metal ores principally
gold, silver, and copper, reached an alltime high. More than 20 mining companies
or subsidiaries actively pursued exploration programs in Nevada during 1967.
Gold was the most sought after commodity 
with 14 exploration projects followed by silver with ten, copper six, and
mercury five. Exploration was underway in 15 counties for 21 different commodities,
11 metals and 10 nonmetallic minerals. Over 75 percent of the exploratory
work was conducted in seven counties Elko, Esmeralda, Eureka, Humboldt, Lander,
Nye, and Pershing. 
 Duval Corp., Lander County, placed its copper concentrator on stream in
May. The Anaconda Company, Lyon County, completed expansion of its copper
concentrator in July and at yearend had completed its drilling program at
the Hall molybdenum property, Nye County. Big Mike Corp., Pershing County,
completed its copper precipitation plant in September. Kennecott Copper Corp.,
White Pine County, began mining ore from the Tripp-Veteran pit west of the
mined-out Liberty pit and announced plans to mine, by open pit, the Ruth
caved orebody, 1 mile east of the Liberty area. On December 15, the Cordero
mine, Humboldt County, yielded its 100,000th flask of mercury. The mine began
producing in the 1930's. The Cortez Joint Venture, Eureka County, reported
that 3 million tons of open-pit gold ore had been delineated at its Crescent
Valley property and completed a preliminary feasibility and engineering report.
A decision to bring the property into production was awaiting official announcement
by the venture partners at yearend. Carlin Gold Mining Co. began recovering
mercury by retorting the precipitate