1 Figures represent metal content of crude ore (dirt) as recovered in concentrate.
Data on tailing lossesnot available.658 
MINERALS YEARBOOK, 1967 
 
 Silvcr.—Less silver was recovered from the concentrate of copper mined
near Creta in 1967 than in the preceding year. 
 Uranium.— Kerr-McGee Corp. announced plans in October to construct
a uranium conversion plant located at the confluence of the Arkansas and
Illinois Rivers west of Sallisaw, Sequoyah County. Uranium oxide (U308) will
be converted into uranium hexafluoride (UF6) for enrichment at one of the
Atomic Energy Commission's gaseous diffusion plants. 
 
 Zinc.—Thirty-two operators mined zinc ore from 61 operations at 47
mines in the Century, Quapaw, and Picher-Cardin Districts in Ottawa County.
Zinc produced in 1967 was less than the previous year largely because of
a drop in price to 13.5 cents per pound on June 20. 
 
 Custom Mills and Smelters.—Domestic and foreign ores and concentrates
were treated in horizontal retort zinc smelters 
operated by American Metal Clmax, Inc., Eagle-Picher Industries, Inc., and
National Zinc Co. at Blackwell, Henryetta, and Bartlesville, respectively.
Federated Metals Division of the American Smelting and Refining Co. operated
a secondary zinc plant in Sand Springs. Kaiser Aluminum & Chemical Corp.
operated a secondary magnesium recovery smelter in Tulsa. Sulfuric acid was
recovered as a byproduct from the zinc ores processed by National Zinc Co.
at Bartlesville. 
 
 Tn-State District.—Late in December, Eagle-Picher Industries, Inc.,
announced plans to develop a lead-zinc deposit in the "sheetground" of Cherokee
County, Kansas, on the Swalley and Paxton leases 5 miles northeast of Picher,
Oklahoma. Output, scheduled to reach 3,000 rock tons per day, would be brought
to the surface by conveyer and processed at the company's Central Mill at
' Cardin, Okla. 
 
Table 17.—Mine production of lead and zinc, in terms of concentrate
and recoverable 
metals 1 
Year 
Lead concentrate 
(galena) 
Zinc concentrate Recoverable metal content 2 
 (sphalerite)                                         
 Lead Zinc 
 
Short Value 
Short Value Short Value Short Value 
 
tons (thousands) 
tons (thousands) tons (thousands) tons (thousands) 
1963        
 4,317 $432 
 24,329 $1,757 3,192 $689 13,245 $3,046 
1964        
1965        
 1966 - 
 3,730 505 3,896 651 4,181 649 
 22,592 1,963 2,781 729 12,159 3,307 23 668 2,277 2,813 878 12,715 3,713
21,086 2,002 2,999 907 11,237 3,259 
1967        
1891—1967 
 3,935    536 1,700,390 166,080 9 
 19,764 1,812 2,727 764 10,670 2,954 
 874,067 494,104 1,302,890 199,079 5,207,683 791,888 
 1 Based on Oklahoma ore (dirt) and old tailing treated at mills during calendar
year indicated. 
 2 In calculating metal content of the ores from assays, allowance made for
smelting losses of both lead and zinc. In comparing values of concentrate
(ore) and metal, it should be noted that value given for concentrate is that
actually received by producer, whereas value of lead and zinc is calculated
from average price for all grades. 
 
Table 18.—Tenor of lead-zinc ore milled and concentrates produced 
 
1966 
1967 
Total material milled short tons~ 
Recovery of concentrate and metal from quantity milled: 
 Galena short tons~ Sphalerite     do 
 Galena percent Sphalerite do. Lead' do_ 
549,313 
 
 4,181 
21,086 
 0.76 
 3.84 
 0.55 
442,858 
 
 3,935 
19,764 
 0.89 
 4.46 
 0.62 
Zinc' do 
2.05 
2.41 
Average lead content of galena concentrate do~Average zinc content of sphalerite
concentrate do - --Average value per ton:   Galena concentrate          
                              
 73.16 
 59.21 
 
$155.26 
 70.70 
 59.99 
 
$136.27 
Sphaleriteconcentrate                                       
$94.94 
$91.69