THE MINERAL INDUSTRY OF ARIZONA 93 '  Preliminary. NA Not available.1 Data
may not add to totals shown because of independent rounding. 
 
primary metal produced along with its associated metals—gold, silver,
and molybdenum. The value of uranium output was substantially lower, because
the U.S. Atomic Energy Commission (AEC) uranium allotment to the Orphan mine,
at the Grand Canyon, was fulfilled in 1966, and the property shut down. The
mine was reopened in September 1967 on a limited basis. Metals production
occurred primarily in Pima, Pinal, Greenlee, and Gila Counties. 
 The strike closure of the copper mines also resulted in declines in output
of a number of nonmetallic minerals used in the processing of ores. Foremost
of these minerals was limestone, a basic chemical used at large copper concentrators,
for flux in copper smelting, and in manufacturing line, 
 Sand and gravei ranked second in value of mineral commodities produced,
and although accounting for 45 percent of the nonmetal output value provided
only 4 percent of the overall mineral output value. Because the total value
of construction contracts awarded in Arizona last year declined due to lower
activity in nonbuilding construction and slightly lessened activity in commercial
and industrial building, output of sand and gravel, which is used extensively
by the construction industry, declined 11 percent. Nonresidential building
contracts were 3 percent lower in 1967, whereas 
nonbuilding contracts dropped 26 percent. Residential building contracts
rose 21 percent above 1966 levels. 
 The mineral fuels output represented 2 percent of the total value of mineral
production in the State. Petroleum output accounted for most of the value,
followed by helium, natural gas, and coal. With the completion of the discovery
well of the Dineh bi Keyah field in February 1967, petroleum production increased
substantially. By the end of September, the new field had 12 producing wells
with a total daily output of 12,000 barrels. 
 
 Employment and Injuries.—Employment3 in the mining and quarrying sector
in the Arizona economy reached 17,400 in June, averaging 16,900 per month
for the first 6 months. Employment dropped to 7,700 in October because of
the labor strike, and averaged 9,500 for each of the last 6 months of the
year while the strike continued. Individual payrolls were substantially lower;
weekly and hourly earnings in the copper mining industry declined respectively
from $154.47 and $3.38 in December 1966 to 
$131.45 and $3.27 in December 1967. The average number of hours worked remained
nearly constant at 42.5 per week. 
 
 Unemployment Compensation Division, Employment Security Commission of Arizona,
Arizona's Current Employment Developments. January-December 1967. 
 
 
Table 4.—Employment and injury experience in the mineral industries

Year and industry 
Average 
 
men 
 
working 
 
daily 
Days 
Active 
Man- 
days 
worked 
(thou- 
sands) 
Manhours worked (thousands) 
Number of injuries 
Fatal Non- 
fatal 
Injury rates per 
million man-hours 
 Fve- Se- 
quency verity 
1966: 
 
 
 
 
 
 
Coal             
5 
140 
1 
6 
 
 
Metal            
Nonmetal         
Sand and gravel     
Stone             
 Total'         1967: ~ 
10,720 
240 
1,257 
372 
318 
226 
241 
276 
3,412 
54 
303 
103 
27,288 
437 
2,421 
822 
 9 660 
 17 
 45 
 12 
 24.52 3,200 38.93 2,052 18.59 740 14.59 141 
 
12,594 
307 
3,872 
30,974 
9 734 
23.99 2,910 
 
 
 
 
 
 
 
Coal              
5 
200 
1 
5 
 
 
Metal           Nonmetal         
NA 285 
NA 221 
2,620 
62 
20,959 
527 
 7 496 
 10 
24.00 3,42018.99 378 
Sand and gravel    Stone             
 
Totall          
1,160 
410 
226 
263 
262 
108 
2,121 
873 
 44 
 13 
20.74 2,41314.90 587 
 
NA 
NA 
3,054 
24,485 
7 563 
23.28 3,165